Indonesia: Submarine missing after torpedo exercise Dozens of people are on board Indonesia's KRI Nanggala-402 submarine that has gone missing. Officials believe the vessel, designed to dive to up to 500 meters, might be some 700 meters underwater. The KRI Nanggala-402 was built in West Germany in in the late 1970s Indonesian authorities continued to search for a missing submarine, believed to be 700 meters underwater, the Navy said on Thursday. The KRI Nanggala-402 submarine had stopped responding early Wednesday, defense officials said. "It is designed to dive to depths of 250-500 meters. Beyond that it's dangerous," Navy spokesman Admiral Julius Widjojono was quoted as saying by DPA news agency.