The ship is at least 60 feet long 35 feet wide...and mimzy is already done with it you should be glad he poops off the boat...don't think too much about mimzy he is more or less there for me to not accidently kill someone and for comedic relief, he defies physics as well do things that he manipulates, if he pulls a sperm whale on the ship he will eat it within a day and it will not hinder your progress unless that was the reason I had him pull it on board. And in that case I will try to find a reason to cause you issues that is more realistic