escape
Correct me if I'm wrong but at the end when Donald Pleasance is trying to escape they shoot the ship then have to go rescue those they've stranded.
Now the survivors then swim out minus one person who became trapped when they shot the ship.
What was the point of shooting the ship. If they was going to escape without the ship then why shoot it potentially killing 3 people?
they could let the ship go by and sorted it out when they escaped.
good fun film though