The news comes a day after debris believed to be from submarine KRI Nanggala-402 was found floating away from the submarine’s last communication capture location in the Bali Sea. Tjahjanto said during a press conference that the Indonesian warship Rigel scanned the area with sound waves, using sound waves to locate objects and magnetometers. Then the MV Swift Rescue from Singapore sent a remote control vehicle (ROV) to get a clearer underwater visualization of the wreck, he said. The wreck of the submarine was found – Photo: Indonesian Navy According to Mr. Tjahjanto: “We have found and photographed parts of the Nanggala submarine such as the transverse steering, the anchor, the outer hull, the vertical steering and other parts of the submarine such as the safety clothing for the crew. Based on that evidence, I declare that the Nanggala submarine sank and the entire crew is dead. ” Indonesian Navy Chief of Staff Yudo Margono said the submarine was found at a depth of 850 meters and broke into three parts. He said the Indonesian government will work with the International Submarine Rescue and Escape Liaison Office “because salvage of the Nanggala submarine will require international cooperation”. The KRI Nanggala 402 is one of two Cakra attack submarines, the German-made Type 209 submarine and exported, and was commissioned by Indonesia in 1981. This submarine is 59.5 m long, 6.2 m widest, with a diving displacement of 1,390 tons. The ship operates by diesel-electric engine, cruise speed when diving is 21.5 knots (nearly 40 km / h), range of 15,200 km. Previously, The Guardian reported on April 21 from the Indonesian navy that power outages occurred while the KRI Nanggala 402 was diving, causing the ship to lose control and unable to conduct emergency procedures to allow the ship. rise.

“We are lifelong friends,” said Frans Wuwung. Wuwung is a retired sailor who trained soldiers on the KRI Nanggala-402 – one of the five submarines of the Indonesian Navy. Before dawn on April 21, Sergeant Guntur Ari Prasetyo and 52 comrades took turn to get off the Nanggala-402 to start torpedo shooting exercises in the waters of the South Pacific. On the ship was also Colonel Harry Setyawan, commander of the Indonesian submarine fleet. Captain Harry’s sailor career began primarily on the Nanggala-402, after he graduated first class from the naval academy. Around 3 o’clock, the Nanggala-402 was allowed to begin a torpedo drill in the waters north of Bali Island. As the dark hull had just descended into the dark water, silence filled the sea surface. Outgoing communication received no response. The Nanggala-402 has been lost. Immediately, ships and aircraft from many countries gathered in Bali sea in hopes of searching for the Nanggala-402. In everyone’s mind, there is a constant fear that the submarine will run out of oxygen at 3 a.m. on April 24, 72 hours after contact was lost. There was evidence that the submarine was sinking On the afternoon of April 24, Chief of Staff Yudo Margono of the Indonesian Navy announced that the debris had been found just a few miles from where the ship was missing three days ago. These fragments confirmed the submarine had sunk to the bottom of the sea and cracked. The ship was declared “sunk” instead of “missing”. Several floating objects identified at sea were dropped from the Nanggala-402, including several prayer mats, special foam used to wipe condensed water, and periscope grease bottles. The bodies of the sailors have not been found, the Chief of Staff said. Meanwhile, follow Jakarta Globe Admiral Yudo Margono also said that the search team is still waiting for a miracle and will continue to search. Indonesian military observer Susaningtyas NH Kertopati said the sailors could breathe slowly to prolong the amount of time they had left with oxygen. “They are trained to do it,” she said. Fragments and objects found were displayed in front of the reporter during the April 24 afternoon press conference. Photo: Reuters. According to Mr. Yudo, the multi-beam sonar technology shows that the Nanggala-402 has sunk to a depth of 850 m, which exceeds the safe depth. The safe over-water pressure is so great that a steel-hulled submarine can be crushed. Although the Nanggala-402 fell into an undersea valley and a compartment in the vessel was not submerged, the ability to survive at such a depth with finite oxygen was very low, according to Susaningtyas Nefo Handayani Kertopati, a love analyst. newspaper and the Indonesian army. “They will fall into a state of panic. Just being locked up in our room would panic. While this is a depth of 850 m. We’re just human after all, ”said Susaningtyas. What caused the ship to crash? The reason why the ship was powered by a deep-sinking electric diesel engine is unknown. But naval experts believe that the Nanggala-402 dive is more likely to happen quickly and suddenly because the ship does not send an emergency call. Norman Polmar, the American historian of submarines, said that the Nanggala-402 was likely to sink due to internal damage. It could be that the piping was damaged causing water overflow or the battery could explode. Shortly before her disappearance, the Nanggala-402 took part in another torpedo drill but had “imperfect” results because of the missed target, according to Rear Adm. Julius Widjojono, spokesman for the Navy. Indonesia. After that, the ship was asked to rehearse again. This is the operation that the ship was about to perform at the time of its disappearance, Rear Admiral Widjojono said. Susaningtyas expert questioned whether the continued short-term deployment of the Nanggala-402 would give the ship enough maintenance time. “The ship has been forced to do this activity in the Bali Sea, very forcefully. Chief of Staff must accept responsibility, “Susaningtyas said. The Nanggala-402 was built in 1977 and completely rebuilt in South Korea in 2012. The Indonesian navy said the ship’s papers were fine. But according to an unnamed defense expert, the submarine may not have been fully maintained since May 2018. The Indonesian naval expert hypothesizes that seawater overflows the ship as it sinks, be it through pipes or torpedoes. Under perfect conditions, the crew may have a way of plugging the gap, but emergencies rarely do so. When a torrent of water flooded in, the pressure could cause the ship to sink immediately. “The ship will sink very quickly, like a rock,” said Soleman Ponta, a military analyst. The Indonesian naval ship participated in the search for the KRI Nanggala-402 submarine. Photo: Reuters. “Pray for me” The day Sergeant Guntur Ari Prasetyo, a diesel technician on the Nanggala-402, left his home in Surabaya, he once told his wife to pray for him. This is what he does every time he is mobilized. Berda Asmara, the wife of sergeant Guntur, followed her husband’s words but this time something was wrong. “Perhaps he had a hunch before he left. He looks different from usual, ”Berda said on April 24. At the same time, in the city of Sidoarjo, an hour’s drive from Sergeant Guntur’s house, Colonel Harry’s family was also praying. Waiting for the good news here is Sheeva Naufal Zidane, the 18-year-old son of Colonel Harry. “From a young age, I wanted to be in the submarine because my dad was cool,” Sheeva said. When the TV reported that the submarine debris was found, everyone in the house got close together. Sheeva applied canola oil to her mother’s legs while the woman cried. The atmosphere rang out prayers. Winny Widayanti, wife of Colonel Harry, said her husband has never lost his temper at work, even in the worst traffic jams. She said she was haunted by debris in the Bali Sea but that would not make her lose faith. “There is still hope. I won’t stop hoping. They will survive. It’s not over yet, ”said Mrs. Winny.

Search helicopters and many other ships left Bali and a naval base in Java headed for the area out of contact with the KRI Nanggala-402 on April 21 as she prepared to conduct a torpedo exercise. . If the submarine was still intact, officials said it would only have enough air for the crew members to survive until around dawn April 24. “So far we have not found it … but with existing equipment we can find the location,” – Achmad Riad, a spokesman for the Indonesian army, said during a press conference. An Indonesian air force pilot said six tons of equipment had been moved to a base to help with the search, including an underwater hot air balloon to help lift the ship. One of the Indonesian military ships involved in the search for the submarine – Photo: Reuters The Indonesian navy said it was investigating whether the submarine lost power when submerged and could not perform emergency procedures when it sank to a depth of 600-700 meters, exceeding the allowable limit. The Chief of Staff of the Indonesian Navy – Yudo Margono said an object with “high magnetic force” was found “floating” at a depth of 50-100 meters and an earlier aerial search had detected a trace. The oil spills near the location where the submarine last caught the signal. Navy spokesperson Julius Widjojono said the diesel-electric submarines can withstand depths of up to 500 meters but surpassing this threshold can kill people inside. The Bali Sea can reach a depth of more than 1,500 meters. One of the men on board was the commander of the Indonesian submarine fleet, Harry Setiawan. The submarine was commissioned into the Indonesian fleet in 1981 and underwent refitting in Korea, completed in 2012. It was said to be in good condition before meeting, the Defense Ministry said. accident. Australia, India, Malaysia, Singapore and the US have sent special ships or aircraft to respond to Indonesia’s request for assistance. The US military is sending a P-8 Poseidon to assist with the submarine search. The Pentagon said US Defense Secretary Lloyd Austin spoke with his Indonesian counterpart and offered additional assistance, which may include navigating underwater search equipment. Two Australian Navy ships are also heading to the search area including a frigate with special sonar scanning capabilities. Indonesia operates five submarines – 2 German-made Type 209s and three newer Korean ones.

Yudo Margono, the naval chief of staff, told reporters that authorities had found an object with “high magnetic force” floating at a depth of 50 to 100 meters. Authorities hope the object could be the missing submarine and are currently waiting for a naval ship with underwater detection facilities to help them investigate the object further. The Indonesian military has so far declined to comment on whether the decades-old submarine, carrying 53 crew, is overpowered. Submarine KRI Nanggala-402 – Photo: Reuters However, they said the submarine may have sank to great depths after a power outage left the crew unable to control the ship. If the object is found to be part of the submarine, the navy suspects the crew may have discharged its fuel load after a power outage to allow the submarine to float. Navy officials feared the submarine might explode. Collin Koh, a naval expert and research fellow at the S. Rajaratnam School of International Studies in Singapore, said damage to the fuel tank could cause “big trouble”. Naval spokesperson Julius Widjojono previously told KompasTV that a battery-powered submarine when submerged could only maintain a depth of 250 to 500 meters. “Anything that makes it go deeper than that can be fatal and dangerous,” he said. The waters in the region are shallower than in other parts of the archipelago but can still reach depths of more than 1,500 meters.

Indonesian submarine KRI Alugoro searched for the KRI Nanggala submarine that was missing while participating in a drill off the coast of Bali on April 21. Photo: AP Indonesian submarine KRI Nanggala 402 lost contact after diving on April 21 off the coast of Bali, and concerns are growing that the submarine may have sunk too deep, difficult to reach and recover. President Joko Widodo has called on all Indonesians to pray for the return of the crew, and ordered every effort to be made to locate the ship in distress. Two ships left a port in a nearby area on the morning of April 23 to engage in search activity. More than 20 naval ships, 2 submarines and 5 aircraft were mobilized for search on April 22, and more large-scale search operations are expected on April 23. Lifeboats from Singapore and Malaysia are expected to be in the area from Saturday to Monday next week, and other countries have also requested assistance. In his televised speech on April 22, Mr. Widodo said: “Our main priority is the safety of the 53 crew members. To the families of the crew members, I can understand their feelings at the moment and we are doing our best to save the lives of all crew members on board. The country’s Navy Admiral Yudo Margono said the missing submarine is expected to run out of oxygen at about 3 a.m. on April 24. The search has been centered around the oil slick discovered near the submarine’s last dive site. But there is no convincing evidence that this oil streak belonged to the missing submarine. Admiral Margono said that the oil could be spilled from a crack in the submarine’s fuel tank or it could also be that the crew drained the oil and the fluids to reduce weight, allowing the ship to float. There was an unidentified object with high magnetism at a depth of 50 to 100 meters, and officials hope it was the submarine they were looking for, Margono said. The Indonesian Navy also believes that the submarine has sunk to a depth of 600-700 meters, much deeper than the landmark where the hull can withstand water pressure. According to estimates by a Korean company that repaired this submarine in the period 2009-2012, the ship could explode when it sank to a depth of 200 meters. Currently, people are still not sure about the reason why the submarine suddenly disappeared. The Indonesian navy said it was possible that an electrical incident could have prevented the submarine from performing emergency procedures to emerge. In addition to the lifeboats sent by Singapore and Malaysia, other offers of assistance have also come from Australia, the US, Germany, France, Russia, India, Turkey and South Korea. The hospital ship KRI Dr. Soeharso of the Indonesian Navy participates in the search for the missing submarine. Photo: AP Historically, submarine accidents have often had serious consequences. In 2000, the Russian nuclear submarine Kursk exploded from the inside and sank during exercises in the Barents Sea. Most of the 118 crew members died immediately, while 23, although they managed to reach the rear compartment, were suffocated. In November 2017, an Argentine submarine went missing and 44 waterways in the South Atlantic, until nearly a year later, it was discovered that the wreck was 800 meters deep. But in 2005, seven members on a Russian mini submarine were rescued three days after their ship was caught in fishing nets and cables in the Pacific, at a time when the ship had only enough oxygen for six hours. if the lake cannot float to the surface of the water. It is known that the KRI Nanggala 402 submarine is currently missing, produced by Germany, has been used by Indonesia since 1981 and at the time of the accident carrying 49 sailors and 3 gunners and commanders. Hoang Bach According to AP