Chapotraphouse

Unfortunately Orcas aren't attacking what the layperson thinks of as a "yacht". In the world of sailing anything with a poured keel is a yacht, so the Orcas are targetting family and middle class boats for the most part. They love spade rudders as well. These are things big megayachts lack. However the toxic waste could give the Orcas superpowers and they just blow through the hull