ship glitch.

[Dr. Zeppers]

In my experience when getting off the ships (although I use war galleon, dont know the sloop glitch).

Sometimes I fall into the water (such as your experience) in which case I can see 'inside' other ships as they sail over me.

Sometimes I stay in the air.

Not sure if there is a way to guarantee one way or the other.

[sammyh]

go up to the front cannon on a sloop(regular) and go to the front facing the back behind the very front cannons and run. you will go through the ship. once i did board a navy ship for a few seconds. had to teleport to a friend to get off.( was getting shot by a war frigate).