Could this work? (two possible ways to escape)
Just watched the movie and I constantly thought that there might have been one (in fact maybe two) solutions to escape the water.
1. Imagine one person floating near the boat. Three persons dive beneath it trying to push the floating person upwards. At the same time a fourth person climbs onto the floating person and tries to jump to the top. Dunno if possible...
2. If you look at the bow of the yacht you see two notches (where the water floats out during the storm). One person could have grabbed the two notches while another person climbed onto the shoulders of the first one. From there it should have been possible to jump to the top.
What do you think?