mar del plata argentina/buenos air hop 44 crew members miss argentine navy submarine may find alive rise defense ministry say vessel likely try communicate via satellite saturday international search mission underway stormy south atlantic ministry say seven fail satellite call believe come ara san juan submarine detect likely sign crew try reestablish contact signal late morning early afternoon last four 36 second ministry say argentina work trace location unnamed u.s. company specialize satellite communications ministry say satellite communications believe fail foul weather source defense ministry authorize speak publicly tell reuters immediately clear type call vessel may try make submarine stricken underwater float location beacon know epirb surface emit emergency signal via satellite whip wind 20-foot wave south atlantic hind international search submarine last confirm location german-built ara san juan 432 km 268 miles argentina southern atlantic coast early wednesday u.s. navy say deploy deep-sea rescue mission argentina california support effort remotely operate vehicle two vessels capable rescue people bottom submarine set arrive come days nations chile south africa offer help argentine sea vessels plan scour southern sea storm pitch powerful wind wave meter 20 feet high disrupt visibility movement area navy spokesman enrique balbi say submarine color design aim camouflage vessel ocean surface also pose challenge idea continue night early morning depend weather condition balbi tell reporters weather expect somewhat improve sunday say search 80 percent area initially target operation turn sign vessel crew ample supply food oxygen balbi add dramatic search captivate nation 44 million recently mourn loss five citizens kill truck driver plow bicycle path new york city resort fish city mar del plata submarine destine arrive vanish catholic mass hold honor crew members many relatives crew members await news city naval base hopeful end soon remain bad memory maria morales mother crew member luis esteban garcia tell journalists message support pour around world pope francis argentine pray fervently crew return home soon office say argentine navy say electrical outage diesel-electric-propelled vessel might down communications protocol call submarine surface communication lose episode could hold political implications president mauricio macri center-right government set ambitious target cut government spend tell reuters march fund available replace outdated military fleet beyond buy aircraft train pilot ara san juan inaugurate 1983 make new three submarine navy fleet build germany nordseewerke undergo mid-life maintenance 2008 argentina require cut hull half seal back together accord state news agency telam nordseewerke belong german industrial group thyssenkrupp ag tkag.de could reach comment outside regular business hours carlos zavalla navy commander urge love ones crew members give hope far concrete thing lack communication zavalla say tv channel a24 argentina say signal detect likely miss submarine