The Indonesian Ministry of Defense has also officially confirmed that the oil spill on the sea surface that has just been found near the location of the lost submarine is leaking oil from this ship, the Indonesian Army also announced a list of 53 people on board. underground “bad fate” KRI Nanggala 402. The image of oil spill on the sea was published by Indonesia on April 22. Source: Sina. It is known that at about 3 am on April 21 (local time), the Nanggala submarine disappeared in waters about 95 km north of Bali. According to the Indonesian Navy, the submarine may have fallen into a sea trench up to 700 meters deep, while the maximum diving capacity of this old submarine was only about 300 meters. Indonesia has formally requested international assistance, and Singapore, India, Australia, as well as all countries with submarine rescue capabilities and equipment have responded. According to a report on the Indonesian media Indopolitika page on April 22, the Indonesian Navy announced a list of 53 members on the Nanggala submarine, and said there were at least 53 crew members or joint staff on board. concerned. The Indonesian navy has sent several rescue teams to search for the submarine. The Nanggala submarine of the Indonesian navy is a 209/1300 class conventional submarine purchased from Germany in the end of 1980. It is forecasted that the search and salvage of this ship will be very difficult. The incident with the Indonesian submarine Nanggala was the second sinking of the submarine of this class. Earlier, in November 2017, the ARA San Juan submarine of the Argentine Navy also had an accident underwater and sank to a depth of 800 meters, all 44 people on board were killed. The ARA San Juan is also a Class 209 submarine. ARA San Juan submarine of Argentina. Source: Sina. It is known that on November 15, 2017, while returning to the base in the coastal city of Mar del Plata, the ARA San Juan submarine suddenly lost contact with the mainland. The Argentine Navy said earlier that the captain of the ARA San Juan had reported water spilling into the ventilation pipe, causing one of the ship’s batteries to short circuit. Hours later, “an explosion” is believed to have occurred near the ARA San Juan submarine site that was last identified. The Argentine Navy suspected that the cause of the explosion could be the “condensed hydrogen phenomenon”. The ARA San Juan is a German diesel-powered class 209 submarine that entered service in the mid-80s of the last century and is most recently refurbished in 2008-2014. With a refurbishment cost of up to 12 million USD, the ship can replace the engine and the energy generation system. During the repair process, experts warn of difficulties because innovation involves integrating systems produced by different manufacturers, even the slightest mistake in the repair phase. could put the safety of the ship and the life of the sailor in danger. After the incident, it was not until a year later that Argentina found the wreck of this ship with its crew. On November 17, 2018, the Ministry of Defense and the Argentine Navy announced that the US Ocean Infinity Company had discovered an object about 600 meters long on the ocean floor, confirming that this was the missing ARA San Juan submarine. The ARA San Juan submarine was found at a depth of more than 900 meters off the Valdes peninsula in the Patagonia region of the Atlantic Ocean, about 600 kilometers from the Argentine port city of Comodoro Rivadavia, the Argentine navy said. Since the ARA San Juan submarine went missing, Argentina has relied on 14 countries such as Russia, the US, the UK, Norway … to participate in the search campaign, in which Russia and the US are the two most experienced countries. in the search and rescue field. Russia has sent ocean research ships and transport aircraft Antonov carrying a searchable robot at a depth of 1,000 meters under the ocean to search. Meanwhile, the US also deployed P-8A Poseidon patrol aircraft, mini submarines, and released buoys attached to sensors for detection.

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.

KRI Nanggala submarine at naval base in Surabaya, Indonesia, February 20, 2019. (Photo: AFP / VNA) The Pentagon on April 23 said US Secretary of Defense Lloyd Austin offered to provide his Indonesian counterpart Prabowo Subianto with underground weapons to assist in the search for a lost Indonesian submarine. The Pentagon statement emphasized: “Defense Minister Lloyd Austin this morning discussed with Indonesian Defense Minister Prabowo Subianto to express concerns about the disappearance of the Indonesian submarine KRI Nanggala 402 as well as the fragile division of the 53 crew members on board. ” The Pentagon also noted that the two sides had discussed the recent deployment of the P-8 Poseidon to aid the search. Minister Austin has proposed to increase support, possibly including the provision of underwater search assets, for this effort. Show the army Indonesia deployed two naval submarines capable of detecting submarines to assist with the search. The KRI Nanggala 402 was suspected of having a total power outage while still diving in the Balinese waters on the morning of April 21 before sinking at a depth of 600-700 meters./.

P-8 Poseidon hunting plane. Photo: The Drive According to the CNN In addition to the US P-8 submarine hunting aircraft, a frigate with sonar scanners and an Australian helicopter are also participating in the search for the Indonesian KRI Nanggala-402 submarine. Meanwhile, deep-sea lifeboats are en route to Indonesia from India and Singapore. Indonesian officials said on Friday that if the submarine was intact and working properly, the sailors would only have enough oxygen to survive until dawn Saturday. “So far, we haven’t found it yet. But with existing equipment, we may be able to locate the submarine, ”Achmad Riad, a spokesman for the Indonesian military, said at a press conference. Submarine KRI Nanggala-402. Photo: USN Collin Koh, an expert at the Indonesian Institute for Strategic and Defense Studies, said that assuming a submarine has enough oxygen for 72 hours is an optimistic statement, as the submarine’s oxygen-generating capacity will be limited during power outages. . “So it’s possible that the oxygen has run out,” Koh said. Experts like Koh said Indonesia will have to expand the search area again if the highly magnetic object proves not to be a ship. Koh also warned that if the submarine falls to “extreme depth”, it will be almost impossible to find. The Bali Sea can reach a depth of more than 1,500 meters. At the time of his disappearance, there were 53 people on board. Including commander of Indonesian submarine fleet – Mr. Harry Setiawan. KRI Nanggala-402 submarine went missing on the morning of April 21 while participating in a torpedo drill near Bali island. On the morning of April 22, oil spills were discovered at the submarine’s diving location. On the morning of April 23, a metal object with a high magnetism was found. But since then, there have been no more clues. On the morning of April 24, the reserved oxygen on the ship was exhausted.

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.

Ballarat, one of two warships dispatched by Australia to assist in the search for the missing Indonesian submarine. Photo: Australian Department of Defense It is expected that the Ballarat warships of the Australian Navy equipped with sonic radar and multi-role helicopters MH-60R will arrive in the search area on April 23. The second ship, Sirius, operating in the area off the coast of Brunei will arrive on April 27. In particular, according to the Australian Department of Defense, Sirius can provide fuel, drinking water and many essentials for ships participating in the search. Australia’s Ministry of Foreign Affairs announced earlier that it would do whatever it could to assist Indonesia in finding the submarine in distress. Meanwhile, the country’s Defense Ministry confirmed that it would keep close contact with Indonesia in case it could provide additional assistance to the search. Submarine KRI Nanggala-402 of the Indonesian Navy, along with its crew of 53, went missing on April 21 while participating in a torpedo launch exercise. The Indonesian army, along with the help of the navy, of some countries are working all out to find the ship in distress in the context that the amount of oxygen used on the ship is only enough until the morning of April 24.