After going through the ship's many areal and levels, I've totally had it. I have basically finished this entire mission and the only remaining objective is to find the Captain. The Captain is nowhere to be found and I'm starting to think there is something wrong... Basicallym its is just me and the three rescued hostages sitting near the submarine... I've gone through the entire dhip for almost 6 hours and there isn;t an area I haven;t overturned several times. I'm about to conclude the captain doesn't exist in my 'save game'. Obviously I can't proceed further without getting the submarine security card from killing the captain, so I am stuck... I can;t go through the ship anymore because I overturned it too many times.. something is wrong.

Any suggestions?