The melon garden on the terrace is 50m2 wide, Ms. Vo Thi Ngoc Anh (born 1990, in District 6, Ho Chi Minh City). Her family designed a hanging system that automatically watered and provided nutrients to the plants. Crispy, sweet melons not only serve the needs of the family, but also give them to relatives and friends. Similarly, Mr. and Mrs. Nguyen Cong Bang (SN 1990, in Tan Phu district, Ho Chi Minh City) also made many people fascinated with the melon garden on the terrace. He and his wife take advantage of the terrace of the house with an area of ​​​​70m2 to plant trees. In addition to vegetables, roses, orchids, they spend 30m2 to grow melons. Big melon, juicy fruit and very sweet to eat. Every day, Ms. To Thuy Hoan (50 years old, in Do Son, Hai Phong) also spends a lot of time taking care of her 50m2 garden. In the season, the garden is ripe and red, and the terrace is very beautiful. When the Covid-19 epidemic appeared, taking advantage of her free time, Ms. Hoan asked for land, Styrofoam boxes and bought seeds … started planting. The amount of land moved up was too much, she had to tie a rope to pull it from the first floor to the terrace. She also makes full use of Styrofoam boxes or plastic buckets as a place to sow seeds. With the crates, she does not punch the bottom, but the edge, about 20 cm from the bottom. Then, she punched a hole in the plastic can and put it on the bottom of the barrel. The mouth of the can is towards the edge of the opaque barrel, making the outlet for water, helping the roots to open, and saving soil. This woman also takes advantage of leftover vegetables, tubers, fruits, and shells of tubers and fruits to put them in the bucket, pour soil on top, then water rice … to form a green manure mixture. Mr. Phan Van Liem’s ​​garden (46 years old, in Tan Phu district, Ho Chi Minh City) is impressed by the “terrible” squash. The area of ​​​​the balconies and terraces on the 4th floor is about 60m2, which he makes full use of planting trees. The largest fruit in his garden weighs more than 34 kg. Previously, he planted ornamental plants to decorate the balcony. After that, when participating in online tree planting associations and groups and visiting some friends’ gardens, he decided to buy pots and land to plant to have clean vegetables and tubers to provide for family meals. The garden is full of fruit. He also grew American figs, kale… Mr. Pham Dang Khoa (Lai Chau City) also makes many people admire with a clean vineyard that he planted and fertilized with his own hands. Although the vines are only grown in boxes less than 1m2 wide, the garden is estimated at 2 quintals. In order to have this vineyard on the 3rd floor terrace, he built a few squares of bricks less than 1m2 wide, pouring soil to plant trees. However, to want the grapes to bear fruit, he worked very hard to fertilize chicken manure and potash fertilizers for the vines. Le Phuong (synthetic)

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.