Arthur Ransome 
Peter Duck 

‘Why do they call him Black Jake? Is it because of his hair?’ Titty asked.
‘Because of his heart’ said Peter Duck
The Swallows and Amazons, as well as Captain Flint and the ancient able seaman Peter Duck, set sail on the Wild Cat bound for the Channel. But they are shadowed by the Viper, manned by none other than Black Jake — a beastly pirate with a dark plan. Can the children race ahead and uncover the buried treasure before the pirate? Can they survive storms, earthquakes, crabs and even a waterspout and make it home?
BACKSTORY: Find out if you would be a good sailor aboard the Wild Cat and learn all about the real location that inspired the author.