How many different boats do you have? And what are their purposes?

I’ve been ignoring sailing way too much. I have a raft that I haven’t touched for a long time. A skiff that I use for trials. And a sloop that I use for salvaging. I haven’t tried trawling or combat yet. Not sure if I should merge my current boats with a purpose of combat or trawling? If I should which ones should I do?