This is why you always jump with a spotter on a blind exit. According to the Daily Mail this cliff diver in Faro District of Portugal only suffered a broken arm after landing on a tour boat from a 50ft cliff dive. Cliff diving is dangerous enough without obstacles in your landing zone. Be smart and only jump into deep and open water.
Here’s another cliff diving incident involving a boat. Thankfully the diver narrowly missed the passing motor boat and was able to avoid the propeller as the boat passed: