Indonesian&nbsp;President&nbsp;Joko Widodo on Monday expressed&nbsp;condolences&nbsp;to the&nbsp;families&nbsp;of the 53&nbsp;crew&nbsp;members aboard the Nanggala-402&nbsp;submarine&nbsp;that was found a day earlier broken into three parts at the bottom of the Bali Sea.

In an address to the nation, the&nbsp;president&nbsp;also said that the government would pay for the education of the children of the&nbsp;crew&nbsp;members.

All 53 crew aboard an Indonesian submarine that disappeared last week were killed, the military said Sunday as it confirmed the vessel had been found in pieces on the seafloor.

Also read|&nbsp;<a href="https://www.wionews.com/world/sunken-missing-indonesian-submarine-found-cracked-open-by-rescuers-380136">Sunken missing Indonesian submarine found cracked open by rescuers</a>

Authorities said that they picked up signals early Sunday from a location more than 800 metres (2,600 feet) deep -- far below what the KRI Nanggala 402's steel hull was built to withstand.

They had used an underwater submarine rescue vehicle supplied by neighbouring Singapore to get visual confirmation of the stricken vessel.&nbsp;

"It was broken into three pieces," said Navy Chief of Staff Yudo Margono.

More parts from the doomed submarine were also retrieved, including an anchor and fluorescent orange safety suits for emergencies, authorities said.

The discovery came&nbsp;a day after the navy had first confirmed the retrieval of fragments from the submarine and declared that it had sunk, effectively ending any chance of finding survivors.

Among the earlier items recovered were a piece of the torpedo system and a bottle of grease used to lubricate periscopes.

They also found a prayer mat commonly used in&nbsp;Indonesia, the world's most populous Muslim-majority nation.

Warships, planes and hundreds of military personnel had led a frantic search for the submarine since it disappeared this week during training exercises, hoping for a miracle rescue before its known oxygen reserves ran out.

But on Sunday, Indonesian military head Hadi Tjahjanto said there was no chance of finding any of the crew alive.

"With deep sadness, I can say that all 53 personnel onboard have passed," he told reporters.&nbsp;

President Joko Widodo described the sailors as&nbsp;Indonesia's "best patriots".

"All Indonesians convey their deep sadness over this incident, especially to the families of the submarine crew," he said.

Authorities have not given an explanation for the accident but said that the submarine may have suffered a blackout that left its crew unable to resurface.

They discounted an explosion, however, saying Saturday that the evidence suggested the submarine came apart as it was crushed by massive water pressure in the vast depths.

Neighbouring Malaysia, as well as the United States, India and Australia, were among the nations helping in the hunt.

Search vessels, reconnaissance aircraft and submarine rescue ships had been deployed to scour a zone of about 10 square nautical miles (34 square kilometres).

The submarine, one of five in&nbsp;Indonesia's fleet,&nbsp;disappeared early Wednesday while it was scheduled to do live torpedo training exercises off Bali.

The crew asked for permission to dive. It lost contact shortly after.

Later, search teams spotted an oil spill where the vessel was thought to have submerged, pointing to possible fuel-tank damage, and a catastrophic accident.

The submarine,&nbsp;delivered to&nbsp;Indonesia&nbsp;in 1981, was seaworthy, the military said.

The model has been used by more than a dozen navies around the world.

But investigators would look at the Indonesian submarine's age as a potential factor, analysts have said.

The disaster was among a string of fatal submarine accidents over the past few decades.

Among the worst was the 2000 sinking of the Kursk, the pride of Russia's Northern Fleet.

That submarine was on manoeuvres in the Barents Sea when it sank with the loss of all 118 aboard. An inquiry found a torpedo had exploded, detonating all the others.

Most of its crew died instantly but some survived for several days before suffocating.

Indonesian President Joko Widodo on Monday expressed condolences to the families of the 53 crew members aboard the Nanggala-402 submarine that was found a day earlier broken into three parts at the bottom of the Bali Sea.

Indonesian President Joko Widodo on Monday expressed condolences to the families of the 53 crew members aboard the Nanggala-402 submarine that was found a day earlier broken into three parts at the bottom of the Bali Sea. In an address to the nation, the president also said that the government would pay for the education of the children of the crew members. All 53 crew aboard an Indonesian submarine that disappeared last week were killed, the military said Sunday as it confirmed the vessel had been found in pieces on the seafloor. Also read| Sunken missing Indonesian submarine found cracked open by rescuers Authorities said that they picked up signals early Sunday from a location more than 800 metres (2,600 feet) deep -- far below what the KRI Nanggala 402's steel hull was built to withstand. They had used an underwater submarine rescue vehicle supplied by neighbouring Singapore to get visual confirmation of the stricken vessel. "It was broken into three pieces," said Navy Chief of Staff Yudo Margono. More parts from the doomed submarine were also retrieved, including an anchor and fluorescent orange safety suits for emergencies, authorities said. The discovery came a day after the navy had first confirmed the retrieval of fragments from the submarine and declared that it had sunk, effectively ending any chance of finding survivors. Among the earlier items recovered were a piece of the torpedo system and a bottle of grease used to lubricate periscopes. They also found a prayer mat commonly used in Indonesia, the world's most populous Muslim-majority nation. Warships, planes and hundreds of military personnel had led a frantic search for the submarine since it disappeared this week during training exercises, hoping for a miracle rescue before its known oxygen reserves ran out. But on Sunday, Indonesian military head Hadi Tjahjanto said there was no chance of finding any of the crew alive. "With deep sadness, I can say that all 53 personnel onboard have passed," he told reporters. President Joko Widodo described the sailors as Indonesia's "best patriots". "All Indonesians convey their deep sadness over this incident, especially to the families of the submarine crew," he said. Authorities have not given an explanation for the accident but said that the submarine may have suffered a blackout that left its crew unable to resurface. They discounted an explosion, however, saying Saturday that the evidence suggested the submarine came apart as it was crushed by massive water pressure in the vast depths. Neighbouring Malaysia, as well as the United States, India and Australia, were among the nations helping in the hunt. Search vessels, reconnaissance aircraft and submarine rescue ships had been deployed to scour a zone of about 10 square nautical miles (34 square kilometres). The submarine, one of five in Indonesia's fleet, disappeared early Wednesday while it was scheduled to do live torpedo training exercises off Bali. The crew asked for permission to dive. It lost contact shortly after. Later, search teams spotted an oil spill where the vessel was thought to have submerged, pointing to possible fuel-tank damage, and a catastrophic accident. The submarine, delivered to Indonesia in 1981, was seaworthy, the military said. The model has been used by more than a dozen navies around the world. But investigators would look at the Indonesian submarine's age as a potential factor, analysts have said. The disaster was among a string of fatal submarine accidents over the past few decades. Among the worst was the 2000 sinking of the Kursk, the pride of Russia's Northern Fleet. That submarine was on manoeuvres in the Barents Sea when it sank with the loss of all 118 aboard. An inquiry found a torpedo had exploded, detonating all the others. Most of its crew died instantly but some survived for several days before suffocating.

Joko Widodo sends condolences to families of crew on doomed submarine

Indonesian navy said on Saturday that the submarine that disappeared off Bali with 53 aborad had sunk. The navy said that it had recovered the debris. The debris included components and items from inside the vessel. The submarine and its crew of 53 had gone missing and a frantic search was on.

"With authentic evidence believed to be from the KRI Nanggala, we have raised the status from submiss to subsunk," Navy chief Yudo Margono told reporters. He added that that the retrieved items could not have come from another vessel.

"Over the past few days we've recovered debris and items from the last location that the submarine was diving," he said.

"(The items) would not have come outside the submarine if there was no external pressure or without damage to its torpedo launcher."

Hopes of rescuing KRI Nanggala 402 submarine crew alive had dimmed on Saturday as Oxygen reserves in the submarine were thought to have run out.

The authorities say that German-built submarine was equipped with enough Oxygen to last for three days after losing power.

The submarine -- one of five in Indonesia's fleet -- disappeared early Wednesday during live torpedo training exercises off the Indonesian holiday island.

There were concerns of the submarine having broken apart as it sank

The vessel was scheduled to conduct the training exercises when it asked for permission to dive. It lost contact shortly after.

Neighbouring Singapore and Malaysia as well as the United States and Australia were among nations helping in the hunt with nearly two dozen warships deployed to scour a search zone covering about 10 square nautical miles (34 square kilometres).

(With inputs from agencies)

Indonesian navy said on Saturday that the submarine that disappeared off Bali with 53 aborad had sunk. The navy said that it had recovered the debris. The debris included components and items from inside the vessel.

Indonesian navy said on Saturday that the submarine that disappeared off Bali with 53 aborad had sunk. The navy said that it had recovered the debris. The debris included components and items from inside the vessel. The submarine and its crew of 53 had gone missing and a frantic search was on. "With authentic evidence believed to be from the KRI Nanggala, we have raised the status from submiss to subsunk," Navy chief Yudo Margono told reporters. He added that that the retrieved items could not have come from another vessel. "Over the past few days we've recovered debris and items from the last location that the submarine was diving," he said. "(The items) would not have come outside the submarine if there was no external pressure or without damage to its torpedo launcher." Hopes of rescuing KRI Nanggala 402 submarine crew alive had dimmed on Saturday as Oxygen reserves in the submarine were thought to have run out. The authorities say that German-built submarine was equipped with enough Oxygen to last for three days after losing power. The submarine -- one of five in Indonesia's fleet -- disappeared early Wednesday during live torpedo training exercises off the Indonesian holiday island. There were concerns of the submarine having broken apart as it sank The vessel was scheduled to conduct the training exercises when it asked for permission to dive. It lost contact shortly after. Neighbouring Singapore and Malaysia as well as the United States and Australia were among nations helping in the hunt with nearly two dozen warships deployed to scour a search zone covering about 10 square nautical miles (34 square kilometres). (With inputs from agencies)

Indonesia: Missing submarine has sunk, says country's navy

Indonesia's president ordered an all-out effort to find a missing submarine in a race against time to save the 53 crew, whose oxygen supply defence chiefs said would last only until Saturday.

The&nbsp;crew on the KRI Nanggala 402 could have enough oxygen until early Saturday, but time was quickly running out as rescuers scoured the coast off holiday island Bali where it disappeared.

<div class="videoWrapper trancodeVideo"><iframe allowfullscreen="" autoplay="1" class="includeVideo" frameborder="0" height="350" src="https://www.wionews.com/videos/gravitas-indonesia-has-less-than-72-hours-to-save-53-crew-members-379353/embed" style="width:100%;max-width:560px;" width="560"></iframe></div>

"There's time until Saturday around 3:00 am. Let's hope we can find them before then," Navy Chief of Staff Yudo Margono told reporters.

However, defence analysts have warned that the vessel could have already broken into pieces if it has sunk to depths believed to be as much as 700 metres (2,300 feet) -- well below what it was built to withstand.

Indonesia sent a helicopter and five ships to search waters&nbsp;north&nbsp;of the holiday island of Bali but found no signs of the KRI Nanggala-402, which went missing early on Wednesday during a torpedo drill.

"I have ordered the military chief, navy chief of staff, the search and rescue agency and other instances to deploy all the forces and the most optimal efforts to find and rescue the submarine crew," President Joko Widodo said on Thursday.

"The main priority is the safety of the 53 crew members."

Yudo Margono, the navy chief of staff, said the search was being aided by calm conditions but the crew's air supply would last only until Saturday..

"Hopefully before they can be found, the oxygen will be enough," he told a news conference in Bali.

The vessel had been cleared for use and was in good condition, he added.

The 1,395-tonne vessel was built in Germany in 1977, according to the defence ministry, and joined the Indonesian fleet in 1981. It underwent a two-year refit in South&nbsp;Korea&nbsp;that was completed in 2012.

Indonesia said several countries had responded to requests for assistance, with Malaysia and Singapore sending ships and Australia offering "help in any way we can".

The US&nbsp;Defence Department is sending "airborne assets" to assist in the submarine search, Pentagon spokesman John Kirby said on Twitter.

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We are deeply saddened by the news of Indonesia’s lost submarine, and our thoughts are with the Indonesian sailors and their families. At the invitation of the Indonesian government, we are sending airborne assets to assist in the search for the missing submarine.
— John Kirby (@PentagonPresSec) <a href="https://twitter.com/PentagonPresSec/status/1385360888815890437?ref_src=twsrc%5Etfw">April 22, 2021</a></blockquote>
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US&nbsp;Defence Secretary Lloyd Austin is scheduled to speak with Indonesian Defence Minister Prabowo Subianto on Friday "to convey our sorrow and to discuss how else the United States can be of assistance," Kirby said.

An aerial search found an oil spill near the submarine's dive location, and two navy vessels with sonar capability had been deployed to assist in the search, officials said.

The oil slick could indicate damage to the vessel or could be a signal from the crew, the navy said.

Chief of staff Yudo said authorities had found an item with "high magnetic force" floating at a depth of 50 to 100 metres.

Modernisation&nbsp;'imperative'

Indonesia has been seeking to modernise its defence capabilities but some of its equipment is old and there have been fatal accidents in recent years.

Subianto said it was "imperative" that Indonesia modernises its defence equipment faster, but did not suggest there had been problems with the missing vessel.

Navy spokesman Julius Widjojono told KompasTV that the diesel-powered submarine that runs on electric batteries while submerged could sustain a depth of 250-500 metres (820-1,640 ft).

"Anything more than that can be pretty fatal, dangerous," the spokesman told KompasTV.

The waters in the area are shallower than in other parts of the archipelago but can still reach depths of more than 1,500 metres.

The navy on Wednesday said a blackout may have occurred during static diving, causing a loss of control and preventing emergency procedures from being carried out if the vessel falls to a depth of 600-700 metres.

Military chief Hadi Tjahjanto on Wednesday told Reuters contact with the submarine was lost at 4:30 a.m. and a search was under way 60 miles (96 km) off Bali.

Indonesia in the past operated a fleet of 12 submarines bought from the Soviet Union to patrol the waters of the sprawling archipelago.

It now operates five,&nbsp;the two German-built Type 209 submarines and three newer South&nbsp;Korean vessels.

(With inputs from agencies)

Indonesia's president ordered an all-out effort to find a missing submarine in a race against time to save the 53 crew, whose oxygen supply defence chiefs said would last only until Saturday.

Indonesia's president ordered an all-out effort to find a missing submarine in a race against time to save the 53 crew, whose oxygen supply defence chiefs said would last only until Saturday. The crew on the KRI Nanggala 402 could have enough oxygen until early Saturday, but time was quickly running out as rescuers scoured the coast off holiday island Bali where it disappeared. "There's time until Saturday around 3:00 am. Let's hope we can find them before then," Navy Chief of Staff Yudo Margono told reporters. However, defence analysts have warned that the vessel could have already broken into pieces if it has sunk to depths believed to be as much as 700 metres (2,300 feet) -- well below what it was built to withstand. Indonesia sent a helicopter and five ships to search waters north of the holiday island of Bali but found no signs of the KRI Nanggala-402, which went missing early on Wednesday during a torpedo drill. "I have ordered the military chief, navy chief of staff, the search and rescue agency and other instances to deploy all the forces and the most optimal efforts to find and rescue the submarine crew," President Joko Widodo said on Thursday. "The main priority is the safety of the 53 crew members." Yudo Margono, the navy chief of staff, said the search was being aided by calm conditions but the crew's air supply would last only until Saturday.. "Hopefully before they can be found, the oxygen will be enough," he told a news conference in Bali. The vessel had been cleared for use and was in good condition, he added. The 1,395-tonne vessel was built in Germany in 1977, according to the defence ministry, and joined the Indonesian fleet in 1981. It underwent a two-year refit in South Korea that was completed in 2012. Indonesia said several countries had responded to requests for assistance, with Malaysia and Singapore sending ships and Australia offering "help in any way we can". The US Defence Department is sending "airborne assets" to assist in the submarine search, Pentagon spokesman John Kirby said on Twitter. We are deeply saddened by the news of Indonesia’s lost submarine, and our thoughts are with the Indonesian sailors and their families. At the invitation of the Indonesian government, we are sending airborne assets to assist in the search for the missing submarine. — John Kirby (@PentagonPresSec) April 22, 2021 × US Defence Secretary Lloyd Austin is scheduled to speak with Indonesian Defence Minister Prabowo Subianto on Friday "to convey our sorrow and to discuss how else the United States can be of assistance," Kirby said. An aerial search found an oil spill near the submarine's dive location, and two navy vessels with sonar capability had been deployed to assist in the search, officials said. The oil slick could indicate damage to the vessel or could be a signal from the crew, the navy said. Chief of staff Yudo said authorities had found an item with "high magnetic force" floating at a depth of 50 to 100 metres. Modernisation 'imperative' Indonesia has been seeking to modernise its defence capabilities but some of its equipment is old and there have been fatal accidents in recent years. Subianto said it was "imperative" that Indonesia modernises its defence equipment faster, but did not suggest there had been problems with the missing vessel. Navy spokesman Julius Widjojono told KompasTV that the diesel-powered submarine that runs on electric batteries while submerged could sustain a depth of 250-500 metres (820-1,640 ft). "Anything more than that can be pretty fatal, dangerous," the spokesman told KompasTV. The waters in the area are shallower than in other parts of the archipelago but can still reach depths of more than 1,500 metres. The navy on Wednesday said a blackout may have occurred during static diving, causing a loss of control and preventing emergency procedures from being carried out if the vessel falls to a depth of 600-700 metres. Military chief Hadi Tjahjanto on Wednesday told Reuters contact with the submarine was lost at 4:30 a.m. and a search was under way 60 miles (96 km) off Bali. Indonesia in the past operated a fleet of 12 submarines bought from the Soviet Union to patrol the waters of the sprawling archipelago. It now operates five, the two German-built Type 209 submarines and three newer South Korean vessels. (With inputs from agencies)

Indonesian president orders all-out effort to find submarine as oxygen runs low