This is book number 1 in the Godine Storyteller series.
Friendship, resourcefulness, and sailing, too Arthur Ransome's Swallows and Amazons series has stood the test of time. More than just great stories, each one celebrates independence and initiative with a colorful, large cast of characters.
In Coot Club, Dorothy and Dick meet Tom Dodgeon, Port and Starboard, and three pirate salvagers--all members of the Coot Club Bird Protection Society. When one of the coot's nests is disturbed by a shipful of "Hullabaloos"--rude holiday boaters--trouble begins. Frantic chases and calamitous boat collisions ensue
The entire Swallows and Amazons series is for children or grownups, anyone captivated by a world of adventure and imagination, exploring and setting sail.