But a few problems:
1- Physics is way too confusing: it's hard to understand when a rope will break or not for one. Another problem is the little movements keeping levels from being over and making you go back to the assembly.
2- The rum barrel has really very limited use and tends to disappear from the construction menu.
3- Budget! Even you went over budget in the last level of your walkthrough. I understand keeping construction limited adds to the challenge, but is it possible (only complaining about lvl 30 though)
4- I agree that it would be nice for the bomb to actually do something on deck. It's ok though.
Nice little puzzle, kept me busy for a while.