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.

Indonesian officials fear the ship may sink deeply, making it difficult to access rescue equipment. In a statement released on April 22, President Joko Widodo called on the people of Indonesia to pray that the crew can return safely. He also ordered all-out use to locate the submarine in distress. More than 20 naval ships, two submarines, five aircraft were mobilized to participate in the search campaign. Lifeboats from Singapore and Malaysia have also arrived on the scene to provide assistance. “Our main priority is the safety of the 53 crew members” Mr. Widodo stressed. Indonesia races against time to rescue the KRI Nanggala-402 submarine. (Photo: Anadolu) Naval Chief of Staff Adm Yudo Margono said, KRI Nanggala 402 is expected to run out of oxygen at 3 am on April 24. Searches are currently concentrated around the oil slick found next to the last dive site of KRI Nanggala 402. But there is currently no evidence that the oil stain was left by a submarine. Margono said the oil could spill from a crack in the fuel tank or the crew could discharge fuel to reduce the weight to help the vessel float. The Indonesian rescue team also found an unidentified highly magnetic object located at a depth of 50-100 m. Officials of this country hope it is the lost ship. However, the Indonesian navy did not rule out the possibility that KRI Nanggala 402 had sunk at a depth of 600-700 m. This depth could crush the ship due to the water pressure. The cause of the disappearance is still unknown. Indonesian officials said the power outage may have prevented the submarine from going through the emergency procedures to float again. In addition to the lifeboats sent to Singapore and Malaysia, Australia, the US, Germany, France, Russia, India, Turkey and South Korea are offering to help Indonesia. Submarine accidents are often catastrophic. In 2000, the Russian nuclear submarine Kursk exploded and sank during a maneuver in the Barents Sea. Most of the 118 crewmembers died immediately, but 23 escaped into the rear compartment before dying because the Russian navy could not find them in time. In November 2017, an Argentine submarine carrying 44 crew members went missing in the South Atlantic. Nearly a year later, the ship’s wreck was found at a depth of 800 meters. But in 2005, a group of seven sailors aboard a small Russian submarine were rescued almost three days after their ship was hooked to a cable at a depth of 190 meters. By the time the cable was cut and surfaced, the amount of oxygen on board was only about six hours. The Indonesian Ministry of Defense said that the German-made diesel-powered KRI Nanggala 402 entered naval service in 1981. The ship carried 49 sailors, one commander and three gunners when it went missing.