"More come with sharp things and commit atrocities."

I heard that whales intetionally sinking ships was common throughout the whaling era, and has all but stipped since whaling was (mostly) outlawed.

Which has taught them: if you sink their ships, they will stop. We just need to figure out what demands these orcas have!

There's apparently not many documented cases, just 2 mentioned here, with the one at the link being a whale the ship had injured:

https://en.wikipedia.org/wiki/Ann_Alexander_(ship)

Sperm whales ramming ships that attack them seems less remarkable than whales in general attacking ships during the wooden ship whaling era.

Update: The article on the Essex mentions quite a few more incidents, but still only a handful:

https://en.wikipedia.org/wiki/Essex_(whaleship)

Modern ships are probably harder to sink, though.

I wouldn’t bet on that.

Modern ships can avoid obstacles using motors and navigation, and avoid storms using weather reports. Modern ships avoid sinking by technology, not strength.

Fibreglass hulls in particular are quite fragile - especially sports hulls that are designed to be lighter.

“So don’t get seen doing it.”

Might be hard in the era of radios - but then, perhaps they'll develop some kind of folk knowledge: "only sink the hard, noisy, floating things during storms".