Nope not that one im afraid. As far as i can remember the ship was lying on the bottom of the sea and had done so for a very long time. Kids had even been born there i belive. By the time the movie started they either had to get out before it rusted, or someone found them.
I remeber it as beeing rather scary.
Wait a second... I belive it came in a few episodes and was sent on TV, so maybe not a movie but a series.