FYI, there are "yachts" and then there are yachts. For every billionaire's mega-yacht with helicopter pads and dozens of crew and whatnot, there are thousands of decades-old, sub-40-foot sailboats that some hippie bought for $1 and spent a year fixing up at the marina in hopes of doing the nautical equivalent of #vanlife.
Unfortunately, the ones being attacked by the orcas tend to be closer to the latter.