Indonesian warships led the hunt yesterday for a submarine that went missing with 53 crew aboard and only enough oxygen for a few days. An oil spill where the submarine was thought to have submerged early Wednesday pointed to possible damage to its fuel tank, and fanned fears of a deadly disaster. 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. However, defence analysts have warned that the vessel could have broken into pieces if it had sunk to depths believed to be as much as 700 metres (2,300 feet). The German-built submarine was scheduled to conduct live torpedo exercises when it asked for permission to dive. It lost contact shortly after.