THE STRAITS TIMES looks at what happened when the KRI Nanggala-402 went missing, and what is involved in the effort to search for it What could happen to a person stranded inside a Mammoth search effort at sea submarine as atmospheric pressure builds up DSAR 6 • A submersible rescue vessel – Ruptured eardrum Nitrogen narcosis Deep Search and Rescue Six Severely out-of-balance TIMELINE • • Nitrogen enters the (DSAR 6, left) – can be launched WEDNESDAY, April 21 YESTERDAY air pressures in the middle bloodstream at increased from the MV Swift Rescue. The information ear and the environment pressure. on what happened can rupture the eardrum. • Can result in impaired • DSAR 6 can go underwater and on Wednesday was 3am 3-3.30am 3.30am 3.46am 3.46-4.46am 4.17am 5.15am 6.46am deploys six military The Republic of A submarine rescue Offers of • Can lead to hearing loss judgment and loss of ne connect with the injured given by KRI Nanggala-402 The Other The searider The vessel fails A helicopter The submarine is The navy vessels and a helicopter in its Singapore’s ship of the Royal assistance and cause the middle ear to motor control. submarine, ferrying the Indonesia’s navy requests submarine’s navy monitors the to respond to is dispatched scheduled to resurface launches a search effort, at the last submarine rescue Malaysian Navy, have also be vulnerable to infections. • In severe cases, people can submarine crew to safety. chief Yudo permission to bow is vessels periscope several calls. to try to but does not appear. search effort to known position of the vessel MV Swift MV Mega Bakti, is come from the enter a coma or die. • The DSAR 6 then returns to the Margono at a news dive at a depth of visible to get into and the The periscope, locate it The navy then follows look for the KRI submarine in waters off Rescue is expected to arrive United States, Oxygen MV Swift Rescue and is docked conference 13m and prepares the searider position to submarine's which should visually but procedures for what to Nanggala-402, north . The ships include expected to arrive on Sunday. Germany, toxicity Barotrauma within a recompression chamber. to re a torpedo. from a 50m launch the identi cation have been this yields do when a submarine and training is underwater oceanographic in Bali waters France, Turkey, Occurs when gases in yesterday. Indonesia’s Defence Lung damage The chamber can hold up to 40 In line with distance. torpedo. light slowly visible, vanishes. no result. loses contact or postponed. vessel Rigel. Indonesia later tomorrow, says an various body organs/ All are in Central Ministry says that happens patients and has medical staff procedure, the dims and Communication experiences problems. says it is deploying 14 more Indonesian military and Russia. structures get Indonesian Time Australia is sending from breathing on hand. submarine is disappears. with the vessel vessels to join the search. spokesman. compressed. (WITA), the same HMAS Ballarat and in too much 9.6m by 3.2m by 2.8m time logged in Bali accompanied by is cut off. • HMAS Sirius, India is oxygen. Decompression and Singapore. a searider. sending one vessel • Weighs 25 tonnes sickness and the United • Can carry up to 17 people and a An undated handout photo States a Poseidon • Sudden return of crew of three made available by the aircraft. pressure to normal MALAYSIA THE KRI NANGGALA-402 shows the can lead to gas • Travels at up to 3 knots Celebes bubbles arising in Sea KRI Nanggala-402 during a MV SWIFT RESCUE Can go up to 500m underwater SUBMARINE tissues or blood. • SINGAPORE mission. Singapore’s submarine support Dimensions: 85m by 18m • Weight: 1,395 tonnes • Can be • • • Can travel up to 15 hours at a life-threatening. vessel (below) is on its way to assist. Weighs 4,300 tonnes time The submarine, with 53 • PoweredPacific Ocean by four electric diesel engines • INDONESIA Launched in 2008, it was the rst in on board, lost contact • Speed: Up to 21.5 knots when submerged • Travels at up to 12 knots South-east Asia to acquire submarine • off Bali’s northern coast and 11 knots when cruising on the surface escape and rescue capabilities. • Carries a crew of 27 Jakarta Java Sea • Can carryPAPUA up to 14 torpedoes Can operate up to 28 days NEW • It also has a helipad for emergency • Flores Sea • It wasGUINEA ordered by Indonesia in 1977 and evacuations, a medical centre with at a time completed in 1980 eight beds for intensive care and a Savu • On July 6, 1981, the submarine of cially 10-bed sick bay. became an Indonesian Navy warship with a base in Ujung, Sources: INDONESIAN NAVY, REPUBLIC OF SINGAPORE NAVY, NATIONAL CENTRE FOR BIOTECHNOLOGY INFORMATION, SCIENCEDIRECT PHOTOS: ST FILE, INDONESIAN NAVY, REUTERS STRAITS TIMES GRAPHICS

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