Sorry if this was already pointed out, but as an engineer I feel that there is something wrong with the balloon in this game.
The main problem I see is that when the balloon it's being destroyed it falls instead of going up.
I mean, think it this way: The balloon makes you float, so it should float by itself. If it's not completely inflated, it should seem to go to the top of the ship instead of falling.
See this image (I took from google images)
As you can see, the balloon is falling. xD
Does that make any sense? I know my English is not as good as it should xD
Please, take this in mind when creating the new ships for the adventure mode.