Tom ran the motor boat close alongside.

With a snarl the man left off his sheet.

The policeman and Dick Prescott leaped aboard the craft, Tom and Harry following.
"This is a cheeky outrage!" snarled the skipper, scowling at the invaders.
"Then keep the change, and welcome," laughed the policeman, taking his stand close to the skipper.
Dick Prescott made a dive at the cabin door, which was closed.
"Open this door!" he summoned.
As the door did not open Dick placed his shoulder against it.
"Open the door, or I'll break it down," Dick insisted.
There was still no answer.

Thereupon Prescott proceeded to put his threat into execution.

Harry bounded forward to help.