A Modern American Submarine Cruising in the Afloat Condition with Foreward Diving-Rudders Folded Back against the Hull

A “Baby Holland” Submarine, One of the First of the U. S. N.

Your Model Submarine in Action

The Conning Tower and Navigating Compartment Controls of a Modern Submarine

The Engine Room of a Modern Submarine Showing the Diesel Engines

A Bliss Torpedo with Rotary Compressed Air Motor

A 3½ inch Submarine Gun in Action Showing the Deck Well and Manner of Operation

The Latest Type of Periscope. A much Magnified Image of the Object Is Shown in the Inner Circle, while in the Outer Circle Is Shown the Object Plus an “all round” View of the Horizon. A Submarine Fitted with This Periscope May well be Said to Have Eyes in the Back of its Head

A Marine Wireless Installation

The Crew of a Submarine (Note Sailor Going Below through Hatch in After-deck)

A German U-Boat “Breaking Water” Preparatory to Examining the Cargo of an Enemy ship

Three Eighty-Foot Gasolene Chasers on their Way to Patrol Duty

Navigating the “Deutschland” by Means of the Deck Control (Note Open Hatch Leading to Conning Tower)