buenos air water enter snorkel argentine submarine ara san juan cause battery short-circuit go miss nov. 15 navy spokesman say monday hope dwindle among families 44-member crew san juan seven-day oxygen supply lose contact sudden noise detect navy say could implosion vessel ship rescue equipment countries include unite state russia nonetheless rush join search disappearance submarine order back mar del plata base report water enter vessel snorkel cause battery short circuit navy spokesman enrique balbi tell news conference isolate battery continue sail underwater toward mar del plata use another battery balbi say contact san juan lose vienna-based comprehensive nuclear test-ban treaty organization international body run global network listen post design check secret atomic blast detect noise navy say could submarine implosion search 65-meter 213-foot diesel-electric submarine concentrate area 430 km 267 miles argentina southern coast effort include ship plan man 4,000 personnel 13 countries include brazil chile great britain among crew family members fissure start appear monday refuse give hope say time accept love ones come back alive relatives say focus lack physical evidence implosion possibility submarine might rise close enough ocean surface replenish oxygen supply go miss itati leguizamon say believe husband crew member german suarez die way alive tell reporters voice shake eye well tear want love adore leave mother sister behind sense stubborn families attack say say find yet tell us truth water enter miss argentine sub 's snorkel cause short circuit