Chapter 21 NO MORE MEN GO OVERBOARD!

In a time like this a man's coolness and nerve receive the utmost test.

Had Jack Benson been there at the wheel he would have swung both hands to the diving controls and shot below the surface.

But Cadet Osgoodby, now at the wheel, did not sufficiently understand the use of the diving controls.

Whatever was to be done had to be accomplishe