"Captain Kennor!" called Darrin, sharply.

"Aye!" responded the Dane.

"Are you still swimming strongly?"

"Aye!"

"Then will you swim ahead and see what it is that my eyes show me on the water?"

"Oh, aye!"

With lusty strokes the Dane swam around him, and then ahead.

"A little more to the left!" called Dave.

Then Captain Kennor believed that he saw it, too, and headed straight for the object. Getting nearer he sent back a real cheer.

"What is it?" Darrin called.