Find the name of movie

I want to find the name of a movie before 1990. The movie is about Christopher Columbus searching for treasure. The setting of 80% of the movie is the time drifting at sea. On that ship there is a sick man, who seems to be mute. At the end of the movie, the ship arrives at an island, the people on the ship fight with the people on the island. The most memorable image: the sick man hits the wall, the wall breaks, gold falls out?