Now on to the last chapter - the boat is sinking fast. Keep tapping the bench to hold on as the boat starts to tip. Eventually you won't be able to hold any longer and will slide back to the bottom of the boat.
You need to find a way through the door via the combination lock. Tap the door to zoom in on the lock and you have to figure out the combination. This is a process of trial and error and the combination is different every time. Keep trying different combinations by turning the numbers and sliding the bar to the right at the bottom. If you have any of the numbers correct, the light above that number will show green, yellow if it is one number off or red if it is totally wrong. Keep trying until you get the combination. Once they are all green, the doop will open.