Speaking about ocean mechanics, I've had a diplomat board an ironclad he was bribing once. It also happened with a sub on another occasion. The ship was stacked with the diplomat on the water tile. Now I know I should've made a save of that situation, but for some reason I didn't. IIRC, when I tried to move the ship to see if I could use it as a transport, the diplomat disappeared. I don't remember if I could save him by dumping him on the beach though. I've also had units disappear from my transports when I try to unload them...
So, since this is a thread about questions, has anyone here had similar seafaring adventures?