Whale adventure - Willard Price

The harpooned whale angrily turned upon his enemies, dived, came up under the boat, and tossed it high into the air. For a moment the sky was full of flying arms and legs as the men who had been spilled out of the boat fell to the sea. Then the bull savagely smashed the boat with his tail.

Hal and Roger are whaling in the Pacific on a sailing ship a hundred years old to see what conditions really were like at that time. But they'd never bargained for such a cruel, vicious captain, nor that their ship would end up wrecked...