I have a doubt concerning what verbs are used to describe the movement of a ship, boat, etc.
Идти/ходить, respectively determinate and indeterminate, mean "to go on foot/walk". If I go somewhere by car, I tell "я езжу" (ind.), "я поеду" (det. pf.).
I've heard that the displacement of vehicles themselves is referred to as идти/ходить too. "Автобус ходит по городу", for example.
But what if I am talking about ships? Dictionaries tell that "плавать" means not only "to swim" but also "to sail/navigate".
Does плавать/плыть and compounds with prefixes such as уплывать/уплыть refer to the action of a sailor aboard a ship, or the movement of the ship herself on water?