Another problem is, if it was destined to sink (fate, whatever you wanna call it) then perhaps no matter what you tried it would still sink...
Personally, I think the best way would have been sabotage. It wouldn't take too much effort to stop it. A crow bar here, a spanner there.. soon fix
But you might not be mechanically minded, so it would be down to the individual 'player'.. some might just want to go tactical and shoot the crew..
As this is Titanic related, have linked your thread to here;
A year of the Titanic
edit on 15-4-2012 by Extralien because: (no reason