If you trawl through the archives on IMDB, you’ll see that there is a list under the tag “Ship Horror”. It contains 131 titles. But after reading through the entire list, you’ll feel none the wiser about ship horror. Is it actually a subgenre of horror movies? Movies like Jaws, the Poseidon Adventure, the Pirates of the Caribbean, and The Creature from the Black Lagoon make the list, and they don’t necessarily feel like ship horror (some don’t feel like horror, for that matter).
https://horror-fix.com/in-search-of-buried-treasure-are-there-any-good-pirate-horror-movies/
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In Search of Buried Treasure – Are There Any Good Pirate Horror Movies