First, it is necessary to consider the operating principle of Shkval. When an object moves in the water, it will create bubbles around it due to its motion, which is the phenomenon of cavitation in nature. The super-cavity is a more special case, when a large air bubble appears and covers the entire object, then the object will almost fly in the air due to the maximum elimination of friction. This is the principle applied on the VA-111 Shkval super-fast torpedo. The VA-111 Shkval was researched in the 1960s as a specialized weapon for attack submarines to fight nuclear submarines and enemy surface ships. On November 29, 1977, the VA-111 Shkval super-cavity torpedo was officially accepted into service in the combat component of the Soviet Navy. Shkval torpedo uses a solid fuel engine, the head is fitted with a special cavity-forming device. It is a thick elliptical piece of metal that is sharpened with an angle of inclination to the longitudinal axis, with a circular cross-section to create an angle of elevation. In fact, a foam generator is not enough, so the torpedo head adds foaming air ducts, the bubbles are generated by a gas booster. This allows to increase the volume of air bubbles and create bubbles that cover the entire torpedo body. The Shkval super-cavity torpedo has a speed of 93 km/h out of the launch tube and up to over 360 km/h when the engine is at full capacity, twice as fast as conventional torpedoes. The warhead of the VA-111 has a weight of 210 kg, enough to break a 10,000-ton destroyer in two with a single shot. However, it should be added that besides the advantages, the VA-111 also has deadly disadvantages, making its use in combat must be carefully considered. Firstly, Shkval’s range is too short, reaching a maximum of only 6,858 m, forcing the submarine to be close to the enemy to be able to strike. This is extremely dangerous because modern warships all have advanced sonar navigation systems and extremely powerful anti-submarine weapons. Second, it is the super-cavity technology that creates superior speed that makes the torpedo unable to establish two-way communication, when the radio signal is blocked from the outside, unable to penetrate the air bubbles. The torpedo relies on estimating target coordinates prior to launch, and its maneuverability is also extremely poor, as a sharp turn would break the supercavity bubble. Third, the secrecy of the Shkval torpedo is completely absent, because it creates extremely loud noises and forms a line of bubbles floating on the water that is easy to observe. Finally, the unit price of the Shkval torpedo is said to be significantly higher than the older generation types, while the advantages are not yet outstanding. For the above reasons, guided torpedoes such as TEST-71 or Type 53-65 combined with Kalibr cruise missiles will give modern submarines a higher combat capability, especially without tethering. it faces dangerous situations like when carrying the VA-111 Shkval. Currently, Russia announced that it has initially successfully tested the Shkval 2.0 variant with a longer range and controllability. If the above weapon is soon completed, it will really be able to replace the products of the old generation.

Sunken Roman statue at Baiae, Italy As humans spread across continents and populations exploded, trade between civilizations became more frequent. Coastal settlements allowed larger ships to come and go, increasing trade and boosting the local economy, with many port towns being built as a way to access rare goods and wealth. have. But the riverbank is not always a safe place to settle down. Saeftinghe Swamp, Netherlands A swamp in the Netherlands known as the Sinking Lands of Saeftinghe, the area was once a prosperous village. In the 13th century, humans drained the swamp so that they could build on the fertile land; they also built dykes around the reclaimed land to protect it from flooding. Much of the land around Saeftinghe was lost in the flood of 1570. Dutch soldiers fighting in the war for independence from the Spaniards were forced to destroy the last dyke barrier. while defending Antwerp, allowing Scheldt’s waters to take over the town. However, a local legend tells a slightly different story, blaming the flood of 1570 on the rampage of a mermaid held captive by the townspeople. Today, the settlement is buried under layers of sand and clay, although bricks have been recovered that may have belonged to a monastery due to the floods. Caribbean Pirate Paradise The Caribbean pirate’s paradise of Port Royal, Jamaica was known as “the worst city on Earth”, before a devastating earthquake and subsequent tsunami pushed two-thirds of the town under waves. The violent shaking liquefied the sand beneath about 2,000 brick buildings, which were displaced and appeared to flow into the sea. Of the town’s estimated 6,500 inhabitants at the time, 2,000 are believed to have perished in the earthquake and tsunami. More than 3,000 people died from injury and disease afterward, according to UNESCO. Salt beach in Germany This place was once a busy trading port. Rungholt’s exact location – long regarded as a legend – remains unclear, although artifacts and evidence of tillage found in the Wadden Sea suggest its existence. a trading port. The flood of Saint Marcellus, also known as the “Great Drowning of Men”, is believed to be the culprit behind the town’s disappearance. High tides caused by extratropical cyclones ravaged the coasts of northern Germany and Denmark, killing thousands. Atlit Yam, Israel The oldest settlement ever discovered in the Mediterranean with interesting rock structures such as Scotland’s Stonehenge. This Neolithic village lies 8 to 12 meters deep under the Mediterranean Sea, hidden for more than 8,000 years until marine archaeologist Ehud Galili discovered it while surveying sand for shipwrecks in 2014. 1984. It is now considered one of the oldest underwater settlements ever discovered. Careful excavations have uncovered rectangular houses with fireplaces and the remains of a dry rock well. One of the most interesting finds is a megalithic structure – similar to Scotland’s Stonehenge – built around a stream, made of seven giant stones weighing around 600 kg each. Burial sites and human remains have also been excavated. One study suggested that a tsunami may have caused the settlement to be abandoned. Baiae, Italy Baiae was once a spa town in Rome that was famous for its debauchery. Underground pressure in the area causes the land to rise and fall, and much of its ancient history is now below sea level. Notably, the underwater remains of the Pisonian Mansion and the statue of Nymphaeum decorated by Emperor Claudius were sunk deep into the water. In addition, several prominent Romans visited the resort town during its heyday, including Julius Caesar, emperors Hadrian and Septimius Severus, generals Gnaeus Pompeius Magnus (Pompey the Great) and Gaius Marius and politician Lucius Licinius Lucullus. Underwater city for over 3,000 years in Greece Hy The city of Pavlopetri, Greece has been submerged for more than 3,000 years. The ruins of Pavlopetri were discovered in 1967, and analyzes of building materials and pottery shards show them to be about 5,000 years old. The town remained above ground for 2,000 years before it could be sunk by earthquakes. The layout of the town has been perfectly preserved 4 meters under the waves, with streets, buildings and tombs eroded over time but still visible. At least 15 buildings have been identified. Thonis-Heracleion, Egypt A statue of a Nile god found underwater is important evidence of the area’s existence. Located northwest of Alexandria on the Nile Delta, Thonis-Heracleion was a famous trading port before earthquakes weakened the land and dragged it under salt water. The area is full of artifacts, but the colossal 6-ton statue of the Nile god Hapi is one of the most important finds among the ruins.

Dwarka City, India: Dwarka is in the harbor area of ​​Dwarka city, Gujarat state, India, located at a depth of 21.3m. This city was built between 9,000 and 12,000 years ago. This place used to be a flourishing city because of the remnants of the foundation, walls, sandstone steps and the remaining network of streets and seaports. The most notable structures are the ruins of temples dating from the reign of King Pallava, 7th century BC. Lion City, Lake Tiandao, China: The Lion City was built during the Eastern Han period (circa 25-200) at the foot of the Five Lions Mountain. When China carried out the project to build the Tan An dam at Tiandao Lake in 1959, the city was submerged under water. In this city before it was flooded, 290,000 people were displaced from the place where their ancestors lived for 1,300 years. The structure is believed to be a miniature version of the city of Atlantis and is part of a collection of miniature versions of the wonders of the world in China. Baiae City, Italy: Once considered the Las Vegas of the Roman Empire, Baiae city was considered a resort for the rich in ancient times. 1,700 years ago it began to sink into the waters of the Gulf of Naples, Italy. In the 8th century, Saracen troops occupied Baiae, by 1500 the city was deserted and most of the ancient ruins were submerged in the shallow waters of a bay near the Naples range. Pavlopetri, Greece: Pavlopetri was a prosperous port city of the Mediterranean region for many centuries. Located off the southern Greek island of Laconia, Pavlopetri was formed during the Mycenaean period, dating to about 1600-1150 BC. Currently, this city still has the foundation of buildings, streets, temples and about 37 stone tombs. Yonaguni Ancient Ruins, Japan: This is one of the mysterious sites on Yonaguni Island in Okinawa Japan, which may be up to 10,000 years old. In the 1980s, divers found stone platforms with a stepped-like structure with flat surfaces and clear angles that resonated in the scientific world later. This monument is also known as “Atlantis of Japan”. Antirhodos City, Alexandria, Egypt: This ancient underwater island is believed to have been submerged by an earthquake around the 4th century and was found in 1996 near the harbor of Alexandria. Explorers have found a marble palace in the 3rd century BC, believed to have belonged to Cleopatra’s time, along with some jewelry, traces of ancient cargo ships, stone houses and wells. Atlit-Yam, Israel: Atlit-Yam was formed in the Neolithic period (7,550-8,000 years ago), is a densely populated area along the coast of Carmel. The city was completely destroyed by a tsunami but today visitors can still see the remains of the foundations of houses, roads and wells. Here also found about 65 sets of adult and child remains.

Land lotus is also known as mountain lotus, Ha Lien Son, Thai Son Moc … originated from South America There are 3 unique white lotus trees in the campus of Boi Khe pagoda This species of lotus is a woody plant grown on land, with shade Boi Khe ancient temple has long been known in addition to its ancient beauty because in the temple there are very beautiful and rare earth lotus species. In particular, this species of lotus also has fruit, its fruit is usually pale pink, large in size and shaped like a pine cone. The flowers are pure white, the petals are thicker and more fragrant than the water lotus Ground lotus can be planted in pots, planted in the garden to decorate because of its beauty, and also have the effect of purifying the air to help fresher. In many places, ground lotus is also chosen to be planted in the temple grounds, but the tree is rarely noticed by people because it rarely flowers. Land lotus blooms from April to June of the lunar calendar, the flower is very durable until 1 week to fade Referring to Boi Khe Pagoda is referring to the earth lotus, a lot of people come here because they are curious about this flower

Humans and the fear of snakes exist in the genetics Few people know that, ophidiophobia or the horrible obsession with snakes and round, long, legless animals in general is the most common fear in human society (1/3 of humanity is afraid of snakes). In addition, scientists have confirmed: Most primates have inherited the instinct to… be afraid and run away from snakes. The reason, prehistoric people were so afraid of snakes because they had to face giant carnivorous reptiles, not hostages like now. First is Titanoboa cerrejonensis : Nearly 13m long, weighing about 1 ton, is considered the largest snake species discovered by man However, some studies indicate that Titanoboa was a piscivore rather than a megafauna-killer. So, is it a giant but gentle animal? Titanoboa cerrejonensis. Before humans left records of Titanoboa, the title of giant snake was given Gigantophis garstini They appeared about 20 million years after Titanoboa in Africa with a length of about 11m. Gigantophis’ favorite food was the ancestor of the modern world’s elephants. Gigantophis garstini. Madtsoia madagascariensis: Giant snake that specializes in eating dinosaurs Gigantophis’ close relative is Madtsoia madagascariensis , another giant snake that lived in Madagascar for several million years during the age of the dinosaurs. They lived with iconic dinosaurs like Majungasaurus , Masiakasaurus and Rahonavis as well as giant frogs Beelzebufo . And perhaps, Madtsoia is also more than enough to eat all the dinosaurs mentioned above. Madtsoia madagascariensis. Both Madtsoia and Gigantophis belong to the ancient family of giant snakes known as the Madtsoiids. Both of these genera lived long ago, but some survived until recently in Australia. Until Wonambi naracoortensis , a snake more than 6m long has inspired the legend of the Rainbow Snake of primitive Australians This size seems modest compared to the previous monsters, but it is still significantly larger when compared to the Anaconda python. Furthermore, over time it has coexisted with giant kangaroos, marsupial lions and primitive Australians – it may have inspired the Rainbow Serpent legend. mythical animals of Australia). Rainbow Snake, one of the mythical animals of Australia. Yurlunggur camfieldensis , a reptile that the Yurlungur aborigines believe is made of bronze, specializes in hunting virgins Living in the same period and place as Wonambi is a species Yurlunggur camfieldensis. They are named after the Yurlungur Aboriginal mythology – which tells of a bronze snake excited by the smell of a young girl’s menstrual blood that would come to eat her and her family. Yurlunggur is said to be up to 8m long and is a self-burrowing aquatic species. They will hunt underwater but live in burrows with soft ground. Though non-poisonous, the terrifying force of the contractions would kill their prey, similar to most pythons today. Yurlunggur camfieldensis. Palaeophiidae, Giant water snake up to 10m long, specializing in eating whales and prehistoric sharks Come to another ancient genus of giant snakes, Palaeophiidae of the genus Palaeophiid . Palaeophiidae evolved over 70 million years ago, and like the Madtsoiids, they survived the K-PG Great Extinction. Similar to modern sea snakes, Palaeophiidae lived entirely in water, only much larger. According to researcher Gary Meaney, Palaeophis colossaeus New is the scariest of all – it can hunt whales, giant sharks in the Eocene waters. It is very large, up to 10m long. Palaeophis colossaeus. Pterosphenus , a giant warm-blooded snake, much more active than a cold-blooded reptile Another branch of the Palaeophiid genus, Pterosphenus , which is also horrifying in size: 7m. In addition, these are giant sea snakes that have the ability to reproduce early and have a warm-blooded metabolism, making them more active than many other slow reptile monsters. Pterosphenus. To the giant, tens of meters long reptiles that dominate the earth During the Pliocene (geological period), did the Australian continent exist the giant python Bluff Downs or Liasis dubungila – one of the few prehistoric animals with a common name. It is more than 10m long and is considered the largest snake ever of this continent. Bluff Downs or Liasis dubungila. In prehistoric times, branches of the python family also gained horological dimensions. One of them is Chubutophis grandis, estimated at 22m in length. And if that’s true, Titanoboa will lose the title of the largest snake in history. They lived in the Miocene with a host of giant South American creatures: Elephant-sized Caimans, giant gharials, giant tigers and giant turtles… Chubutophis grandis. Finally, let’s come to the largest venomous snake known: Laophis , closely resembles the poisonous Gabon viper, which lived on the Greek islands during the Pliocene. According to scientists, it weighs twice as much as the largest venomous snakes of the modern world, more than 4m long. This size has nothing to do with the reptiles listed above, but they are not poisonous… Laophis. As such, Titanoboa was the only nightmare snake that slithered around in ancient times. It may be the biggest, but it’s probably not the scariest.

“Mermaid diving is developing very quickly in China,” said Mr. Yan Lou, president of PADI (Association of Professional Diving Instructors) in the country of billions of people. On April 28, more than 100 “mermaids” appeared at the Ambassador Lagoonkhu hotel aquarium at Atlantis Sanya resort (China). This activity aims to break the Guinness record for the largest mermaid diving show in the world, on the occasion of the resort’s 3rd anniversary. After this activity, PADI launched 4 mermaid diving courses from basic to advanced. These courses are all very popular in China. “After admiring the beautiful images of the mermaids, the audience seemed to immediately want to take the course. Within four months of its launch, mermaid courses accounted for 30% of local certifications in China,” said Lou. The mermaid diving performance at Atlantis Sanya set a Guinness record. Photo: CNN. Corinna Davids, the head of development for mermaid dive courses offered by SSI (Diving Society International), also confirms this trend. “There is a huge demand for mermaid diving lessons in China. The sport has grown exponentially since we started rolling out in 2017,” she said. SSI has offered independent mermaid diving courses at more than 3,000 locations worldwide. “We now have more than 1,000 mermaid trainers in China and the sport is growing rapidly. This sport is also a bridge to help scuba diving and freediving become more known in this country,” added Davids. Attraction from the ocean Similar to freediving, the “mermaids” do not use any oxygen or support equipment other than a fishtail. “Wearing a fishtail restricts leg movement, making diving more difficult. Divers must use their belly and waist to move. This requires a long time of practice to be able to move smoothly and gracefully like a real mermaid”, said Dada Li, one of the pioneers in mermaid diving and also the PADI representative at China, said. China is a very potential market for mermaid diving. Photo: Xinhua. In 2015, Li completed an international course in freediving instruction and became the first female freediving instructor in China. In the same year, she established a professional team of mermaid divers to perform at aquariums and underwater events in China. Thanks to their meticulousness and skillful technique, the mermaids make the audience admire. The spread on social networks also helps these professions begin to become more widely known. China is also home to some of the youngest divers in the world. In addition, women in this country make up the largest proportion of divers in the world (nearly 50%). The mermaid diving show is loved by many people because of its beauty. Photo: Werner Lau. “Mermaid diving is often seen as an activity for children or women. However, we can guarantee that this is the right sport for everyone. My husband loves it too,” Davids said. Compared to freediving or scuba diving courses, mermaid diving focuses on fun, safety and enjoyment of life. This subject is for those who are not afraid to go into the water and have a love for the ocean. “As a freedom-loving person, I feel like I’ve turned into a real mermaid when diving, able to go anywhere I want,” Li said.

Mr. Salamak Klathalay. Photo: CNN. This unique way of life came to an abrupt end in 2005, following the 2004 tsunami. The Moken people survived, even completely unscathed after the disaster, relying on the traditional experience of foraging for high ground. than to avoid waves. However, in an effort to assimilate the Moken into Thai culture, the government has moved more than 300 Moken people to more fortified land, in the area of ​​Ko Surin National Park, Phang Nga province. , Southern Thailand. Since then, the Moken have more or less adapted to a relatively modern life. They have gradually built a village with simple wooden and bamboo houses, equipped with solar panels and running water. And for the first time, they get a regular source of income from tourism. Ngoey Klathalay – Head of the village said: “We make money from selling souvenirs to tourists or leading boat tours”; “On average, about 100 tourists visit the village every day.” However, the Covid-19 pandemic suddenly broke out in early 2020, forcing the Thai Government to close to international tourism, losing the almost only source of income for the Moken people. In that moment, the survival instinct – sailing, hunting and gathering again strongly rose up in Moken people. Hook Klathalay, Ngoey’s brother, said: “I’ve been living on this boat for two years.” For Hook, the attraction of the sea prompted him to quickly return to the traditional Moken life. Mr. Hook Klathalay. Photo: CNN Hook and his son built a boat with tools such as nets, hooks, three-pronged spears… and conducted daily hunting trips in various shallow waters. “With just a little rice, we can get the rest of the necessities in the ocean,” says Hook. Hook adds that the pressure of the Covid-19 pandemic has caused the Moken to re-evaluate their way of life; many Mokens told Hook that they wanted to live in a boat, on the ocean. Many Moken people are also gradually returning to hunting, daily collecting shellfish, crustaceans and small fish through rudimentary tools such as knives and spears. However, the sea is not the only source of food for the Moken. They also go to the wooded islands to dig for tubers they call “murung”. Boiled and peeled, the “murung” tuber has a texture and flavor similar to that of a “water chestnut”. Ngoey said: “Since the outbreak of Covid-19, the income of Moken people has decreased, but not much in my opinion; We are not desperate, we are not starving. For a long time we were not dependent on tourism, we only did tourism for a few years. But we will always have the sea.”

Russia has developed a project to build a patrol boat capable of diving. Such a ship combines the main features and advantages of a submarine and a surface patrol vessel. The project is intended for export and is supposed to attract the interest of less affluent countries looking to upgrade their fleets. In mid-April 2021, Rubin Design Studio unveiled a new project. They provide background information about an unusual idea, upcoming implementation, and expected results. In addition, this design studio also shows a hologram of a patrol boat with submarine features. The new export-oriented project is named ‘Sentinel’ in Russian, with the English designation chosen as ‘Border and Offshore Submersible Sentry’ or ‘BOSS’ . Sentinel will most likely be marketed as ‘BOSS’ in the international market. The project developers note that modern patrol boats are relatively cheap – and due to their low cost, they attract the attention of poor countries. The main goal of such ships is to be able to prevent poaching and illegal fishing. “Project Sentinel proposes the construction of a ship capable of operating on water or under water. It is claimed that such a ship in a position on the water will be able to carry out official patrols, locate and arrest violators,” said Viktor Murahovsky, editor-in-chief of the magazine’ Homeland Arsenal’, said. “The underwater location is intended for covert surveillance of intruders, reconnaissance and even to avoid adverse weather conditions.” According to him, this is the first version of the diving patrol boat. In the future, the model can be modified to suit the wishes of foreign customers. The official image shows a ship that has the appearance of a submarine but has some uncharacteristic features of a submarine. The Sentinel had an elongated hull with a flat deck on which a limited-sized superstructure was placed. At the bow of the ship, the shield of the hydroacoustic complex antenna can be seen. On either side, forward of the superstructure control tower, there are extendable horizontal rudders. At the stern of the ship there is a compartment for storing motorboats that are brought on deck. As expected, the architecture and main dimensions of the ‘Sentinel’ are similar to the diesel-electric submarines designed under the old ‘Project 613’. This is a major project in the history of the Russian Navy and is very popular with foreign customers. Depending on configuration, ‘BOSS’ ships can be up to 60-70 meters in length and displace around 1,000 tons – approximately the size of an average 613 submarine. The full composition of the ship’s special systems and equipment is not specified. But this semi-submersible patrol boat is capable of carrying weapons of all kinds. It can be equipped with a small artillery complex, a missile system or torpedoes. For reconnaissance and inspection of other ships, the ship will be able to carry UAVs and motorboats. Sentinel can accommodate up to 42 people. This includes crew members, ship operators, and inspection teams responsible for dealing with violators. “The development of the Sentinel project is to meet the current requirements of the international market. Many countries are expressing interest in patrol boats. Thanks to the Sentinel project, Russian industry was able to gain a new position in the international market,” said expert Murahovsky.

In recent years, stand-up paddle boarding (SUP) has gradually become popular in Vietnam and is loved by many young people. “SUP rowing is a sport that brings exciting and diverse experiences to many players,” said Nguyen Ho, founder of Saigon Cheo Station. Over the past 7 years, SUP (Stand Up Paddle-boarding), or stand-up paddleboarding, has gradually become popular in Vietnam and favored by many young people. In addition to curious guests who love to experience new things, this sport also builds a community of passionate players, long-term investment. Having been involved with SUP rowing from an early age, Mr. Nguyen Ho said that the number of young people interested in this experience has increased significantly in the past 4-5 years. “Every month, we can receive 600-700 regular students to practice, and the number of guests who come to rent SUP or experience the subject is difficult to count,” he said. Unlike kayaking or boating, SUP is a personalized sport. Therefore, the tools and playing equipment are all one. Players will stand on a large board and use paddles to move on the water. In fact, SUP is suitable for many types of terrain such as rivers, streams, canals, lakes, but it is still ideal when playing in open water such as the sea. Under the advice, the SUP site I chose was in District 7, HCMC. One of the reasons why SUP is increasingly popular with young people is that it can serve a variety of purposes: relaxing rowing, sports rowing and participating in SUP racing. Like many first-time players, I choose to relax in order to both experience the sport and see Saigon from a new perspective. With this need, Coach Ho advised me to use an all-round board, suitable for beginners thanks to its well-balanced design, easy to balance on the water. The cost for a stand-up paddle boarding session here ranges from 300,000-600,000 VND/SUP, depending on different types and types of boards. In addition, players can participate in a short 3-hour training course with a coach for VND 500,000 to receive instruction on the most basic skills of this subject. For any sport, preparation is a must to ensure safety and optimize the experience. In about 30-45 minutes, I was taught the basics of water safety, SUP skills and handling situations. For beginners, the trainer will teach the basic movements to steer the SUP board on the water, including how to hold the paddle, balance, row straight, steer the sides and turn. The above techniques are not too difficult to understand and complicated, but it takes time to get used to and practice when starting “real combat”. After the introductory lesson on how to paddle SUP, I switched to protective equipment during the game: life jacket and seat belt. Note, the seat belt connecting the paddle board and the ankle is a must, regardless of whether it is a beginner or a professional. Nguyen Ho said the station has the complete right not to let guests into the water if they refuse to wear a leg strap. “Wearing a leg strap is like wearing a seat belt when sitting in a car or plane. If you accidentally fall into the water, you can’t drift far from the board, so you can rely on SUP to float to the surface,” he explained. . Another note when playing water sports is that players need to pay attention to the direction of the wind and creek to choose the time and place to drop the paddle board and handle the situation. Because the place where I dropped the SUP was a canal, with sludge accumulating below, the coach advised to wait for the high tide to move smoothly. On the other hand, players should row against the current first, when returning, they can follow the positive current to reduce their strength. Even though I was fully equipped with knowledge, I was still a little nervous before going into the water. Contrary to initial worries, the SUP board is quite stable, with little wobble on the water when I sit on it. Initially, players are encouraged to row in a kneeling position to get used to the feeling of floating on the water, then stand rowing as the name of the sport. However, when I lost my balance or encountered high winds, the coach advised me to kneel down to stabilize, to avoid falling into the water. After a few minutes of getting used to the SUP in a kneeling position, I gradually became more confident, trying to stand up in the correct way as instructed: against the paddle on the board, using one leg as a pillar to borrow the force to stand up. Only then did I really shake off the initial anxiety and confusion to enjoy this “unique” experience. From the water, I can watch the bustling urban scene in the distance, immersed in the golden sunset. In the midst of the hustle and bustle of Saigon, seeing the city from a whole new perspective is an exciting experience. After about an hour of rowing SUP, I started to feel tired. Therefore, players need to have a good physical foundation, or choose a reasonable intensity and playing time. In addition, when encountering underwater situations such as high winds, falling off the paddle board, entangled in obstacles …, it is necessary to calmly handle it, do not panic. Because SUP is a water sport, players should wear lightweight clothing or sportswear with sun protection for ease of swimming, movement and avoiding sunburn. I also prepare an extra waterproof bag to store important things like phone, cash…

1. The hotel is built on an artificial island Burj Al Arab Hotel in Dubai. The bridge connecting Burj Al Arab to the mainland can only be accessed by hotel staff and guests. This hotel has 56 floors, over 300m high – even taller than the Eiffel Tower. The hotel is built on an artificial island. People had to erect 230 concrete columns 40m long below sea level to keep the artificial island afloat. The hotel building stands out with the shape of a ship’s sail. But aside from aesthetic reasons, it’s designed so that the shade doesn’t block the sun from beachgoers below. 2. Transfers by Rolls Royce or private helicopter Transfer by private supercar and helicopter. Burj Al Arab offers you 2 types of transportation to get to the hotel. You will be picked up at the airport in a white Rolls Royce with a private driver. You can also opt for a private helicopter to take you to the special helipad located on the roof of the hotel. 3. Everything is made of gold and marble Furniture made of gold or inlaid with gold. The floors and walls of the hotel are made of special Statuario marble. Everything inside is either made of 24-carat gold or encrusted with gold, including the decorations, furniture and televisions. Even the mirror and art frame are gilded. In addition, the hotel’s on-site restaurant has a ceiling designed by Swarovski crystals, symbolizing the Milky Way. 4. Huge suites Burj Al Arab has a total of 202 luxury rooms and some rooms have panoramic sea views. The smallest deluxe room is the size of a 4-bedroom house, measuring 170 square meters. While the Royal Suite (a type of superior room) is served by a private elevator. Some suites also have their own cinema, 2 bars and a huge library. 5. You have your own butler Upon completion of check-in, Burj Al Arab provides you with an exclusive butler. The housekeeper takes you to your room and guides you around. If desired, the butler will unpack or pack your luggage for you. Burj Al Arab’s staff-to-guest ratio is 6:1, so you’ll never be left out. One butler will deliver your sunglasses, another will spray you with a mist to relax on the beach and the other will prepare a bubble bath under shimmering candlelight. In addition, there is a private butler who takes care of pets so that guests can enjoy their stay comfortably. 6. Rich and sumptuous interior The interior here is inspired by Dubai culture, lavish and colorful. A golden chandelier hangs over the hallway and the king-sized beds are covered with the finest Egyptian cotton sheets. All come with custom-made rugs from South Africa and India. The bathroom is decorated with beautiful paintings, with a jacuzzi and giant shower that can fit the whole family. There’s also a private lounge for dining, and if you need to work, you’ll be equipped with a gold-plated Macbook or iPad. 7. Rooms are equipped with the latest technology Here, all the magic happens at the push of a button. The bed swivels to any position you like, and you can use the remote to call up TV screens hidden in the wall. The remote also controls the doors, curtains and blackout curtains, it also puts you in touch with the housekeeper if needed. 8. There is no shortage of services for entertainment The pool is strewn with rose petals. The hotel’s services include many swimming pools, 9 restaurants and bars, water park. There is the famous Talise Spa with vast ocean views and a private beach for hotel guests. You can also request a romantic evening in the pool for two. Hotel staff will organize floating candles and rose petals for you. 9. Underwater seafood restaurant Burj Al Arab has an underwater restaurant called Al Mahara, which means “oyster shell”. The entrance to the restaurant is a corridor with a yellow dome resembling a submarine. In the center is a giant aquarium containing colorful corals and exotic fish, including sharks. You can enjoy dinner while a shark casually swims around. 10. Beds are made of the rarest materials Bed sheets are made from soft velvet duck feathers. To ensure a good night’s sleep, the linens in each room are made from the rarest duvet in the world. The feathers are hand-picked from abandoned natural velvet nests in Iceland. The mother duck plucks the softest feathers on her chest to line the nest and keep the eggs warm. The hotel also offers you 17 designer pillows to choose from. 11. Every room has a perfume collection Branded perfumes are included in each room. If other hotels only provide you with shampoo, shower gel or toothpaste, in Burj Al Arab visitors are also provided with an expensive Hermès collection consisting of 14 different items, most of which are water. flower. You can even bring them home if you like. Ngoc Trang (According to Bright side)

1. Yerebatan Cistern – Where is the “Forgotten Underwater Palace” located? Icon Brother Icon France Icon Turkey The correct answer is answer C: Yerebatan Cistern (Basilica Cistern) is actually an ancient water tank left underwater in Turkey. This underground cistern is, in Greek, known as the “Basilica”. Archaeologists today call it “The Forgotten Underwater Palace”. 2. What year was Yerebatan Cistern built? Icon 531 Icon 532 Icon 533 The correct answer is answer B: Yerebatan Cistern was built in 532 under the Byzantine Emperor Justinian I. This ancient emperor built a cistern to store water for the Great Hall. In 1453, the cistern system was forgotten, when the capital Constantinople fell into the hands of the Ottoman Empire. In 1545, the French archaeologist Petrus Gyllius discovered the “underwater palace”. 3. In which city was the “Palace” Yerebatan Cistern built? Icon Istanbul Icon Besiktas Icon Ankara The correct answer is answer A: Yerebatan Cistern was built in the Turkish city of Istanbul. In this city, scientists found hundreds of water tanks, elaborately designed and built, of which the most famous is the Basilica Cistern. Not only an ordinary reservoir, Basilica Cistern is also known as the “Swallowed Palace”, hidden deep underground, which attracts a lot of tourists when visiting. 4. How many meters long is Basilica Cistern? Icon 140m Icon 143m Icon 145m The correct answer is answer B: “Palace” Basilica Cistern is the largest water tank in Istanbul with a length of 143 m, a width of 70 m, containing about 80,000 m3. 5. What kind of stone is Basilica Cistern built from? Icon granite Icon Magma Icon Jade The correct answer is answer C: This building is supported by 336 marble columns, creating beautiful domes like the famous synagogue in Europe. Some of the stone pillars are carved with the head of Medusa upside down. Currently, the Basilica Cistern is a popular tourist attraction in Istanbul. To help visitors admire the marble columns, as well as the devil’s head, in 1990, the city government installed a wooden platform system on a part of the water area to make a walking area inside the tank. . 6. Turkey’s Istanbul is Europe’s largest city? Icon It’s correct Icon Wrong The correct answer is answer A: According to World Atlas, with a population of more than 14 million people, an area of ​​more than 5.3 thousand square kilometers, Istanbul is the largest city in Europe. It is also one of the largest cities in the world. 7. What distinctive geographical feature does this city have? Icon Located on the islands Icon Located on 2 continents Icon Located on 7 hills The correct answer is answer B: Not only is the largest city in Europe, but Istanbul is also known as the only city in the world spanning 2 different continents including Asia and Europe. 8. Istanbul is also known as the city…? Icon Golden City Icon Diamond City Icon Cat City The correct answer is answer C: The forgotten city Istanbul is also known as the “cat city”. This city currently has more than 1 million cats living, making it the city with the most cats in the world. Result Please work harder! point

1. Strengthen thigh muscles According to doctors, when you strengthen your muscles, the knee joint is also stabilized. You should do strength training in a safe way, starting with your hips and core. Here are exercises you can do at home: – Warm-up position: Stand up straight, hold the handrail firmly, twist the body at a 90 degree angle (as shown in picture 1). – Next put your foot on the next step. – The front leg is the pillar, lift the back leg to straighten. – Return to the starting position. – Do 10 reps, switch legs and repeat. 2. Wear knee support belt, cushioned shoes when exercising vận Studies have shown that using a knee brace reduces pressure on the knee on the dominant side by 43 percent and the non-dominant side by 63 percent, compared with no support at all. In addition, the knee support belt reduces the side effects of doing deep squats. So if you play basketball or go to the gym, wear a knee brace to protect your knee joint. Doctors also recommend wearing quality running shoes, wearing gel insoles when walking or when standing for long periods of time. 3.Increase the range of motion of the knee Experts have found that most of our knees get stiffer with age. That’s why you have to train your knees to be straight. Knees can be worked out in the pool or at home with the following exercise: -Sit on the bed or the floor. Place a pillow under your ankles, bend your knees. – Use leg muscles to slowly push the knee down. 4. Swimming, water aerobics In cases where you have a high degree of knee pain that can make your mobility very difficult, doctors recommend starting with lower-impact activities. Prioritize swimming and other forms of water aerobics. You can also exercise with a bicycle or elliptical machine. 4 things not to do to protect the knee joint 1. Don’t do squats too deep Performing deep squats can put extra pressure on the knees. You can use a chair for support when exercising to make sure you don’t sit down too low. 2. Do not choose exercises that involve dancing There are certain exercises and activities that can make knee pain worse. Standing too long, squatting the wrong way, or squatting too deeply can cause knee pain. Avoid activities such as jogging and jumping rope. 3. Don’t wear shoes that are too old Shoes are important accessories when you run, walk or stand. Shoes can stretch and wear out after a period of use. No matter how much you love your shoes, don’t wear old shoes when they have lost their support and anti-slip effect. There are 2 types of footwear you should not wear to protect your knee joints, which are high heels and flip flops. High heels shift your center of gravity forward and cause muscle imbalance. Flip-flops are bad for your joints because they don’t support the arch of your foot. 4. Don’t eat too much salt, corn oil, cheese Eating too much salt or corn oil can lead to arthritis. You should reduce salt intake, use extra virgin olive oil. Some experts also recommend avoiding cheese because cheese can speed up knee osteoarthritis, possibly due to its high fat content.

How to distinguish real – fake incense? Illustration Mr. Bien Quoc Dung, Vice Chairman of Khanh Hoa Agarwood Association: Raw materials for making agarwood products today are mainly natural and artificial incense. However, natural frankincense is very precious, rare, high cost, so very few establishments make products from this type of agar. The main product is made from artificial agarwood, which is gourd plant grown and cultivated with agarwood. It takes 10 years for the seedlings to be planted until the time they can be drilled. After transplanting agarwood, it takes about 5 years to create agarwood, but not every tree after transplanting produces agarwood, the success rate is relatively low. Therefore, artificial bass is also very precious and the price is quite high. One characteristic of basswood is that it is very soft, so it is difficult to use machines to mass-produce items such as bass rings that have to be done by hand. The grain is mass-produced mechanically, not of agarwood. Producers often use chemicals with a deep odor to seep into wood grains to imitate agarwood. To distinguish, the simplest way is to directly smell the product, if at first there is an alcohol smell, or a strong aroma, it is a chemical impregnated product. Because a really deep smell is usually faint, mild, it takes a new temperature to release the fragrance. Another trick often offered by the seller to lure customers is to put the series of bass rings in the water. If the circle sinks, it proves it is deep However, the agarwood wood is not only soft but also light, so it will float on the water, of course there are still pieces of wood submerged in the water, which are pieces of wood with many deep essential oils crystallized from many years. The cost of this type of submerged bass is very high, each ring made from this type of bass is the lowest at 400 million VND / chain. According to the Life science

Modern boats take tourists about 7km from the mainland in the Aliwal Shoal (PV Dinh Luong at the far right). South Africa in particular and Africa in general attracts tourists with its pristine beauty, mystical indigenous culture and with 5 large species of “Big Five” including African elephants, Cape buffalo, leopard, lion and Rhino. But there is a different South Africa from the trips adventure travel Swim with sharks at Aliwal Shoal Marine Life Reserve, Umkomaas Town, KwaZulu-Natal Province, South Africa, about 50km south of the provincial capital Durban. Here’s your chance to meet these amazing creatures face-to-face throughout your life, a new adventure experience that challenges logical thinking and does what you never thought you’d ever do – in the water surrounded by sharks. Wondering if you can’t swim, can’t swim well, or are afraid of risking your life? All you need is an adventurous, adventurous and challenging spirit as the tour organizers will offer you a variety of options – from near absolute safety to the ultimate test of willpower. . You can simply drop yourself inside a stainless steel cage approved by the Maritime Safety Authority of South Africa (SamA) with a safety mask, choosing from different degrees of shallow depth when standing in the cage according to your preference. . But prepare for adrenaline rush with a more adventurous and memorable option. Many different options when diving with sharks. (Photo: Dinh Luong / Vietnam +) We came to Aliwal Dive Center because it is a diving center with sharks with more than 28 years of experience. Answering my concerns and worries when considering bringing both my wife and two children to the shark experience diving tour – guide and diving expert with the shark Danie Bester said he has more than 4 years in job and no mistakes have occurred. Aliwal Dive Center is part of an effort to conserve marine life, including sharks in the Indian Ocean, around the coastal city of Durban. Leaving previous jobs in Pretoria and Johannesburg, Danie chose to guide diving with sharks, because he could do what he loved and wanted to contribute to changing the animal’s perception. After helping with the selection of swimsuits, propellers and waterproof masks, Danie carefully told us to keep our arms closed under our armpits, use the propeller to swim softly, avoiding the shark’s mistaken hands other small fish species for food and attack. Strictly complying with the requirements for medical reporting during the COVID-19 pandemic season, my family of 4 and my friend Lina, 17, a South African citizen of Indian origin join a shark diving tour. . Lina’s parents pleased their daughter but still worriedly sent off to the beach and waited. Surf safely on custom 8m Superduck Semi Rigid boats equipped with a Yamaha Four Stroke 2×100 HP engine, to the area south of Aliwal Shoal, where skilled guides say there’s plenty of fish fat. The modern motor boat takes the group about 7km from the shore, the water depth is 20-30m. Sharks head to the ocean from many directions. (Photo: Dinh Luong / Vietnam +) We are fortunate to have a beautiful International Labor Day, the sea is relatively calm, the water is clear, the sunlight helps the view to the sea floor. In the breeding season from July to November each year, sharks often gather in high density in this sea. Captain Keith Rousouw with 25 years of experience instructing diving with sharks directly steered the boat. He said a support group of four divers on another boat helped us attract sharks, using food from small marine fish that was prepared and strictly followed the Ministry of Environment’s Shark Diving license. South Africa. The stainless steel cage floats on the water thanks to two buoys. The cage designed and perfected by an engineer can accommodate 8 people at a time, providing a relatively comfortable space for 4 visitors on this discovery tour. You might be wondering with the number 4? I chose to swim with Danie right from the beginning after consulting with these two skilled experts. Danie let me hang on a floating wooden stake thanks to two large floats, attached to the iron cage, for a wider view and better experience. You can feel my worries more clearly when you have seen the shark videos. The Oceanic Blacktip is 1.5-2m long, stout body with pointed snout, long gill slits and no burrs between dorsal fins. This species reached a maximum known length of 2.8m and a maximum weight of 123kg. Most individuals have a black head or edge on pectoral, dorsal, ventral, and caudal fins. Danie was in the water directly with us and Keith watched carefully from the boat. Expert Danie in turn helps team members cling to the wooden stake and swim with each person closer to the sharks. The experience of diving and being up close with the sharks affirms Danie’s love and understanding for this fish – calm and flexible. Between the time diving and underwater observations, I rose to the surface to breathe but many times saw the tall and crescent-shaped front dorsal fins of the ocean blackhead sharks moving around in the afternoon. It is about 1.5m long and weighs about 50-70kg, according to Danie. The blackhead shark is an agile and energetic carnivore. Oceanic Blacktip can jump out of the water while attacking small schools of fish. Their demeanor has been described as “timid” compared to other great globular sharks (family Carcharhinus), which are common in coastal tropical and subtropical seas around the world, including lips. brackish water habitat. We assessed that we had met about 25-30 marine blackhead sharks during the trip, but Danie said there were about 17 (perhaps due to anxiety, so amateurs “look nationalized chickens”). Many times while swimming next to Danie gets closer to the sharks, it feels as if they are rushing towards you, but with a graceful turn. Although I have had very close experiences with these ferocious animals, to a certain extent, I have to admit that they seem to be very friendly. And to be very restrained, we do not reach out to touch the flexible swim bodies very close – which expert Danie always warns to absolutely comply. Not only having a diving experience with sharks, the trip brings an understanding of other creatures living in shallow waters below 40m and small, symbiotic fish always “side by side” with the sharks. Another plus point is that you will experience surfing on a modern boat controlled by skilled captains. Goodbye, Ms. Basie Aukermann, Director of Aliwal Dive Center, said that the Center has actively and silently contributed to the conservation of marine life at Aliwal Shoal Protected Area and is delighted to have tourists from Vietnam. The distant south has come and experienced. Nature has its own ways of functioning, and South Africa is not just famous for the Big Five on land. The land of great experiences to challenge the will and adventure, to explore. Expert Danie Bester (left) supports journalist Dinh Luong on adventure travel. (Photo: Dinh Luong / Vietnam +)

The design of a patrol boat capable of diving under water in the Sentinel project. Photo: TASS This is an affordable submarine for countries with a modest defense budget. The new ship combines the features and advantages of submarines with surface patrol boats. This export-specific project, is expected to attract the attention of smaller countries looking to upgrade their fleets. The purpose of the project “BOSS” In mid-April 2021, the Rubin Central Marine Technical Design Bureau unveiled a new project. The agency provided background information on the project to build a special patrol boat, its progress and expected results. Along with that, is a three-dimensional image of a patrol ship with submarine features. The project dedicated to export is called “Sentinel” in Russian, and the English name is “BOSS (short for Border and Offshore Submersible Sentry). The Sentinel will most likely be marketed on the national market as “BOSS”. The cost of modern patrol boats is relatively low, making them suitable for countries with small budgets, project developers note. The aim of these ships is to prevent poaching and illegal fishing. In addition, they can also be used as security ships, lifeboats or for research purposes. Viktor Murahovsk – editor-in-chief of Homeland Arsenal magazine said: “The Sentinel project proposes building a ship capable of operating both above and below the water. When operating on water, it can patrol, identify and arrest offenders. When operating under water, it will secretly spy on intruders, scout and avoid bad weather while on mission. According to Viktor Murahovsky, the first version of the patrol diving boat will have the above characteristics, in the future they will be modified to meet the needs of foreign customers. Technical characteristics Officially released photos show that this ship takes the form of a submarine but has some properties that are not typical of those operating under water. The Sentinel has a rather long hull with a flat deck, on deck there is a cockpit with a limited size. In the bow is equipped with hydrophonic complex antenna. The ship has a conical control tower with horizontal rudders. At the stern, there was a compartment for the motorboats of the patrol teams. According to published information, in terms of architecture and size, the ship resembles the project 613 diesel-electric submarines built in the 1950s. It is the largest project in the history of the Russian Navy and is foreign customers are very popular. Depending on configuration, the Sentinel patrol boat will be 60 to 70 meters in length, displacing about 1,000 tons. The full details of the ship’s special systems and equipment are not yet clear. However, this patrol ship is believed to be able to carry weapons such as torpedoes, missile systems, and small caliber artillery platforms. To perform patrol and surveillance tasks, the ship will be equipped with unmanned aircraft (UAV) capable of flying for many hours continuously and canoe. A crew of 42 people, including a patrol team, is responsible for handling violators. Advantage over foreign competitors Expert Viktor Murahovsk said: “The development of the Sentinel project is aimed at meeting the current needs of the international market. Many countries are paying special attention to patrol boats. Thanks to this project, the Russian defense industry can gain a new position in the international market ”. To win against foreign competitors, the new patrol ship must have certain advantages, outperforming its competitors. One of the Sentinel’s advantages is to abandon the traditional form of a surface ship to a combination of a patrol boat and a submarine. “With the basic functionality of surface ships, the Sentinel can patrol and arrest violators just like other patrol boats. In addition, due to its built-in weaponry, it can provide the necessary combat capabilities, meeting the requirements for surface ships. On the other hand, diving will help the ship be stealthy and perform missions below the water, as well as provide other advantages, ”concluded Viktor Murahovsk. Most importantly, the Sentinel is not a specialized train, but a multi-purpose ship. Its equipment and weapons will be determined by the customer, depending on their needs. In the Sentinel project there are both simply minimally equipped patrol boats and state-of-the-art “powerful hunters” capable of destroying underwater and surface targets. Flexibility in using this vessel type can be an important competitive advantage.

Submarine sailors have a particularly unusual life for ordinary people to imagine. According to Business Insider, American submarine sailors are usually deployed underwater for three months. Those chosen must ensure not only the requirements of technical capacity but also a strong mentality to be able to live underwater for many months. The sailors’ first task after submarines submerged was to ensure there were no leaks on board. After the submarine completely submerged, sailors’ lives took place according to the 18-hour schedule, divided into 3 shifts, each 6-hour shift includes 1 sleep shift, 1 watch shift and 1 shift. recreational activities, relaxation. The rest of the day sailors spent on eating and drinking. Due to the enclosed space, lack of natural light, sailors have difficulty in sensing the passage of time. To them, the time on the submarine seemed to “freeze”. According to a sailor, they basically perceive the time of day according to the type of food they are eating. If they’re getting pancakes, you know it’s morning and if they have leftovers, they know it’s midnight. Sometimes there is not enough bed for sailors on a submarine. Therefore, there will be temporary beds placed in the torpedo room. An actual bed inside the submarine is often called amusing a “coffin” because the space is extremely cramped. Every space on the submarine is practically cramped. The hallway that only has 1 person to walk is no exception. Bathrooms are arranged on a minimum on the submarine. Sometimes 40 sailors have to share 1 bathroom. The shower should also be very small to save space for other important parts of the submarine. However, the kitchen area on a submarine has relative priority in terms of area. Fresh foods usually go away within a few weeks. The rest of the time, the sailors will eat canned or processed food. Without windows, sonar technology was the “eye and ear” of sailors. Although the submarine is cramped, it still has a gym to help the sailors stay in shape. After weeks of living inside the submarine, sailors may have the opportunity to swim, sunbathe, absorb some Vitamin D …

Soak in the clear blue water, under the brilliant golden summer sun shining, making you feel like you are fully enjoying this travel trip. To own virtual live photos filled with breath, the salty taste of the blue sea, do not hesitate to float under water and take them from above. (Photo: Internet) Fling hair Trends fluttering his hair when taking pictures and is very popular with foreign travel bloggers. This style applies to girls who have long hair. (Photo: Internet) Photo taken behind the back A secret in the handbook “types of beautiful photography in the sea” that is communicated by young people is that the photo taken behind the back “does not see the face is beautiful”, posing towards the sea facing the sea. If unfortunately one morning you wake up late, have not put on makeup, or simply travel according to the criteria of showing off beautiful scenery, beachwear is the main thing, do not miss out on posing for pictures at this beach. (Photo: Internet) Bambi Pose This is one of the styles for girls who like to be “sexy” a little bit. Bambi Pose is a design that places the entire body center on the thighs, tightens the thighs towards the back, the front thighs are extended. It looks a bit weird, but this is really the pose that is fascinated by women because it highlights the sexy 3rd round. (Photo: Internet) Cover your face with your hands Posing with hands to cover the face comes from the act of hiding your hands from the sun or bowing your head. Take advantage of the brilliant sea sunlight, gently cover your hands, tilt your head, close your eyes, or look in the distance. Choose a “divine” angle, with a charming smile, you will have a million-like photo. (Photo: Internet) Toss skirt Don’t forget maxi dresses that fly when going to the beach. This is the “weapon” for you to have 101 types of luxurious “virtual life” images, poetic by just flipping a skirt or rotating skirt. (Photo: Internet) Walk along the shore One of the most “divine” styles if you can’t think of what to add to the moment. Just walk slowly, gently, look out to sea and that’s it! (Photo: Internet) Backlit poses Make use of the afternoon sun and sunset, you will have a magical photo. In a backlit frame, your figure will stand out more, so don’t be afraid to pose as “adventurous”. (Photo: Internet) Foot / shoe show style Blue sea, yellow sand, we have white feet and pretty shoes. Light footsteps in the sand, lukewarm feet, or gentle water baths can also become the subject of beach photography styles. This pose is not only for women but also a good pose for men. (Photo: Internet)

Fragments from the submarine were found during a search operation. When the submarine of the Indonesian navy carried 53 divers into the Bali Sea during a periodic training exercise, it may have been pulled into the abyss by an invisible but powerful force. Indonesian naval officials suspect an inner wave, known to have occurred in the waters around Bali, could have caused the sinking of the KRI Nanggala 402. (According to Britannian Dictionary: Side Wave) in, a kind of gravity wave that occurs on internal “surfaces” in ocean waters). The KRI Nanggala 402 sank to a depth of 838 meters, far beyond the reach of the rescuers. As the crew members’ personal belongings surfaced and the ship’s oxygen supplies dwindled, officials said there was no possibility of anyone surviving. The question remains: What happened? Many theories have been put forward but the authorities say there is evidence that an underwater wave – which could induce a vertical tensile force below sea level – occurred in the Bali Sea around the time. The submarine disappeared last Wednesday morning. The Lombok Strait between the islands of Bali and Lombok is believed to be famous for its violent underground waves on an almost bi-weekly basis. NASA, the US space regulator, says the combination of strong tidal currents, rough ocean floor and water exchange between two channels – one shallow and one deep – “tends to combine around 14. once a day for exceptionally strong tidal currents. Indonesian naval officials believe this natural phenomenon is more likely to be the explanation for the submarine disaster than other theories have been put forward in recent days. The waves inside are barely discernible on the ocean’s surface, but underwater, they can reach towering heights. The waves inside can look like ripples on the ocean’s surface, like this satellite image taken by NASA in 2013. (Wikimedia Commons: NASA) Rear Admiral Muhammad Ali, former commander of the KRI Nanggala 402, and now the Indonesian navy planning and budgeting assistant, said an internal wave was essentially “a strong electric current that can pull a submarine. vertically so it will sink faster than usual. ” “Our suspicions were directed towards natural conditions. Because an undercurrent appeared at that time in the north of Bali,” he told Indonesian media. Naval officials said images from Japan’s Himawari 8 satellite, as well as Europe’s Sentinel satellite, showed massive underwater waves coinciding with the sinking of the KRI Nanggala 402. . “It moves from the bottom to the north and there is a groove between the two waves,” said Rear Adm. Iwan Isnurwanto, Commander of the Indonesian Navy Command and General Staff School. “The wave speed is about two knots and the amount of water is about two to four million cubic liters.” Admiral Iwan explained that an inner wave could render the crew powerless in the face of nature. “Once the water swept along and pushed the ship down, what else could we do? There is no safety measure that can fix that.” Other theories about what happened to the submarine have also emerged. Some suggested that this submarine was hit by a missile from a foreign ship, or even lost power. But naval officials said the submarine was still trackable when it began diving for torpedo drills and “the lights were on” – meaning there was only a small chance of power outages. They also denied that the ship was overloaded, a theory that had 53 crew members on board but only 34 beds, instead arguing that the crew was divided into three shifts and took turns sleeping. “The submarine was originally for 33 staff members, then modernized to meet our need to have 50 staff on board,” said Admiral Iwan. Officials said the submarine was also designed to carry eight torpedoes – weighing about a ton each – but only four at the time of the disaster. Many other experts point out that metal fatigue due to cracking or corrosion and that the age of the parts is the more likely cause. KRI Nanggala 402 was built in 1978 and last overhauled in 2012, almost a decade ago.

Titanium is now an important factor in the design of fashion and accessories. Thanks to its high strength, corrosion resistance, and light weight, watchmakers begin to use this metal for the reasons below. Light-weight According to the Momentum Watch , the craftsman can easily design complex titanium watches because it is light and durable. Many people believe that lightweight watches are more suitable for women. However, men are now looking for lightweight products so as not to interfere with arm performance. This is one of the reasons titanium watches are so popular among men. The light weight of the watch makes the user operations easier. Photo: Keepthetime. Durable The titanium watch’s weight is 45% lighter than stainless steel. Also, titanium watches are virtually impossible to rust. This metal can resist most acids, except for nitric acid (a very rare substance that occurs in everyday life). In fact, the corrosion resistance of tian and platinum is similar. Works well underwater Titanium is composed of an oxide film, which does not allow metals to rust or corrode. This makes titanium watches a great choice for divers and those engaged in underwater activities. In addition, titanium can easily survive in harsh environments. Watch makers report the water resistance of this metal to differ from model to model. Water resistance and natural stress resistance make titanium material popular. Photo: watchipidia. Do not irritate the skin According to the GQ Mexico Titanium does not cause any skin irritation when exposed to sweat or water. In contrast to titanium, stainless steel contains nickel, which causes skin rashes or allergies. If you are looking to buy luxury brand watches, titanium watches are the ideal choice. Fashionable Titanium material cannot be mechanically cast to specific shapes in the automated production system. Instead, it needs to be drilled and machined manually. This gives a unique aesthetic to titanium products. In addition, this material also gives a trendy and distinctive color compared to stainless steel. When wearing a titanium watch, you exude both classic and modern style. Its diverse features and outstanding advantages make titanium an indispensable material in watchmaking. Photo: blastingnews. Environmentally friendly metal Besides, titanium is an environmentally friendly metal because it can be easily recycled. Titanium’s unique properties make it the ideal metal for high-end, trendy watchmaking. You can choose a watch model according to your preference or wallet. How to choose watches for men Tim Dessaint suggests a few tips to help the guys get the model that suits the style.

On his personal page, the actor posted a picture of a French fashion house wearing a Tambour Street Diver watch, taken by world-famous photographer Mario Sorrenti. Since his debut in 2006, Lee Min Ho is famous both at home and abroad, and is loved by many fans. The Tambour Street Diver is a traditional diver accessory, remade for the underwater version of the movie Tron. It’s made of a single block of metal and the Tambour’s unique design, wider than the upper one, was inspired by the drum. Lee Min Ho becomes the brand ambassador for Louis Vuitton Watch & Jewelry. Photo: @actorleeminho. This product was released with 3 mixes including neon blue, blue and gold. Depending on the color scheme, the watch sells for $ 7,505 and $ 16,910. The rubber strap is sold separately for $ 405 and $ 510. The soft and rounded hour indicators, the easy-to-read dial, become a favorite of aesthetics. Super-LumiNova luminescent is applied to the design, making it easy for divers to read the time underwater. It also plays a role in making the highlight, making the product look more eye-catching. Watches are increasingly becoming a concern of high fashion brands. “It is not difficult to know the reasons for fashion brands’ interest in watches as this industry continues to boom”, GQ comment. Watches like Louis Vuitton’s Tambour in particular and many other fashion brands in general now use real movements, emphasizing the technical details of the collector’s favorite. In addition, male singer Cha Eun Woo also updated on his personal page the picture of him wearing this accessory model from a French fashion house. Cha Eun Woo shows off a photo of a luxury fashion brand’s watch. Photo: @ eunwo.o_c. The Vietnamese-American model went on the catwalk for Chanel, Louis Vuitton Belonging to the generation of models that are resonating, Jade Nguyen has the opportunity to stride in prestigious shows.

Sharks are pictures that haunt the minds of many people swimming or rowing in the ocean. Sharks are often portrayed in movies as merciless blood hunters, but in fact it is also a very intelligent and curious creature. Taylor Cunningham, a marine biologist and shark conservationist, and a shark safety instructor, shares skills in dealing with the fear known as the shark. Study local sharks During certain times of the year, some sharks get closer to shore in the warm coastal waters. In Hawaii, for example, tiger sharks swim near shore in late summer and early fall to give birth. Therefore, it is very helpful to learn about local sharks in order to choose water activities wisely. Wear a mask and fins when swimming For professional swimmers, there is no need to wear a mask and fins every time you step into the sea. But if you swim long distances and are worried that you might encounter sharks, you should use this device. Cunningham said both of these devices help swimmers become more aware of their surroundings, the key to being safe in the ocean. Humans and sharks can still live peacefully. Leave the white and yellow bikinis at home It may be hard to believe, but the color of your clothes and equipment is important to sharks. “Sharks have monochrome vision, so colors like white, yellow or neon should be avoided when swimming or diving because these colors stand out in the blue ocean. Instead, choose darker colors, like black and blue. bar to minimize unwanted attention from the shark ” Cunningham explained. Don’t worry if you get cut or scratched – sharks don’t respond to human blood There is a long-held belief that sharks are a species with an excellent sense of smell that is sensitive to human blood. Cunningham said: “Sharks do not react to human blood or scents. Scientists have done studies in which they found that sharks have minimal or no response in the brain to humans. “ Act like a predator, constantly checking your surroundings By constantly spinning and looking around while underwater, you are communicating that you are a predator, not a prey. Being like a predator makes you less likely to get approached by a shark. Make eye contact if you see a shark When seeing a shark, many people’s instincts are to swim as fast as they can in the other direction, but this may be announcing that you are prey and should be chased. With the confidence of making eye contact with a shark, you are asserting yourself as a predator. However, it is necessary to have flexibility because there can be many sharks at the same time. So, after your initial eye contact, look for the other sharks around. Create the necessary distance from the shark If a shark is approaching, use your fins, GoPro or any solid object you have on you to create some distance between you and the animal. Then you are sending a quantity of water and some things towards them. They will probably pick up, collide and turn away … Slowly step back after making eye contact, but avoid splashing and making noise. The reason you prove yourself as an underwater predator is to tell the shark that you are not on their menu. Splashing, yelling, and rioting on the surface can make them think you are a sick or injured bird or fish – which are on a shark’s favorite menu. Understanding the shark will be less afraid when it comes to “collision” with the shark. Note the shark’s body language Sharks are not inherently aggressive, but they can win territory or compete, Cunningham explained. Sharks will use their body language before confrontation. If you notice a shark releasing pectoral fins (like when a cat arches its back) or opening its mouth (like when a dog growls) slowly step back, give it space, and get out of the water. Remember sharks swim and ignore humans Most people assume that if there are sharks in the water, they will feel them, but in fact, Cunningham says sharks swim and ignore everyone, just like any other fish. Over the years, drone footage has shown sharks within the reach of swimmers without their knowledge. Above all, don’t panic! The key to overcoming any encounter with a shark is acting like a predator. Sharks do not consider humans as prey. Usually, sharks completely ignore humans in the ocean. While it may seem impossible to stay calm when dealing with sharks, it is not. You just need to know a little bit about shark behavior and learn to react appropriately if you encounter it while swimming. “Falled coconuts kill more people than sharks, but in fact, no one is afraid of falling coconuts” – Cunningham’s hand analyzed. The ocean is the home of marine life, including sharks. Respect for the ocean, the common home of sharks and marine life “We need to understand that the ocean is home to a lot of wildlife, not just sharks. Ocean infiltration is human invading the house of marine species. Therefore, it is the responsibility of man to be aware of his or her impacts on the oceans and wildlife or the conditions that may affect them ”- shark conservationist Taylor Cunningham emphasized.