For the last couple of years orcas have been ramming and breaking the rudders of small boats off the coasts of Spain and Portugal. They've actually figured out that without a rudder a boat stops moving, that's pretty forking impressive. They sunk at least one (but didn't attack the lifeboat). Hundreds of these events have happened, it's now a known hazard in the area and boats are advised to avoid the area if they can.
https://www.yachtingworld.com/news/why-have-orcas-been-attacking-yachts-a-puzzling-mystery-143953
@hollie I started wondering whether it's actually worse on a sailing ship: the ship's center of water resistance shifts forward, so is in a different position vs the center of wind resistance. I don't know how narrow is the acceptable range of the distances between them. If that's important enough, broken rudder would be strictly worse than a stuck rudder.
@robryk I'm picturing a movie now with a plot line about TRULY DIABOLICAL orcas. :)