While I've never been on a Ship/Boat/stuff, I can certainly state that I've also had 'that feeling'. I've never actually seen anything, Just heard stuff about in my house (Obviously when I'm the only one there). Little things, like footsteps and the bike wheels spinning.
So yeah, I can imagine. But man, you's got some scary stuff there. Personally I like lore, so I reckon I would go around and ask for more stories like that about the ship.