The big problem on a pirate ship is your own junk. There just is not room to keep much. It is not like there is some where on shore you can store your things that going to be there when you get back , that is if you ever go back to the same place more than twice a year. I have thought of having a wench or two hold things for me , but if I'm not there they are not my wenches. That is just the truth of it. So what do you do with your stuff? Maybe that is why pirates just collect wenches and memories.