The Hellship! A sacred shrine of The Abyssals and a devil in its own rights. It stalks the tide looking for wounded creatures to CRUNCH.
Every wooden panel of the ship seems to be carved with some image of the watery depths. And there is a deep feeling of discomfort while aboard, especially for any who dwell within the hull.
Also kind of pretty valuable as it can sail any tides, including those of other planes that it can almost effortlessly hop between. Not so good is that it is not really interested in travelling anywhere that doesn’t line with its interests.
Also there’s a devil sitting in the hull playing a little cello.