I know this is just being silly, but stop and think about the difference in scale between a yacht and the larger ships in the ocean. There was a recent case of a cruise ship showing up at port with a whale over it's bow. The ship rammed a whale, effectively beached it on the bulbous bow and no one on the ship noticed. And then you have things like an Eisenhower Class Aircraft Carrier. At over 1000 feet long, 250 feet wide and displacing over 100,000 tons the sheer scale of the ship is hard to imagine without seeing it. Imagine taking a sky scraper, tipping it on it's side and floating that out to sea. That's what we're talking about. You could have 10 large blue whales laid out tip to tail along the length of the carrier. An entire pod of whales ramming such a ship would just result in whales with concussions. And then CWIS goes brrr.....

Whales, dolphins and other marine animals are amazing, but their scale and coordination pales in comparison to what humans do. We have basically no natural weapons or advantages in strength or speed. But, we dominate the planet because we can plan far ahead and work in groups much larger than a local tribe. We also harness energy in ways well beyond what animals do. Even something as simple as fire is outside the ability of other animals to create and use effectively.