An introduction to submarines.

Includes fold-out pages. "Includes actual size photographs"--Cover. Includes index.

An underwater marvel -- How subs are built -- Down the hatch -- Steering the sub -- Computers make it go -- Look at that : periscopes -- Sonar : sound, navigation, and ranging -- The control room -- Meals under the sea -- "Man the torpedoes!" -- Going to the head -- Berthing areas.