ILLUSTRATIONS
| A Modern American Submarine Cruising in the Afloat Condition with Foreward Diving-Rudders Folded Back against the Hull | [Frontispiece] |
| FACING PAGE | |
| A “Baby Holland” Submarine, One of the First of the U. S. N. | [18] |
| Your Model Submarine in Action | [46] |
| The Conning Tower and Navigating Compartment Controls of a Modern Submarine | [58] |
| The Engine Room of a Modern Submarine Showing the Diesel Engines | [82] |
| A Bliss Torpedo with Rotary Compressed Air Motor | [98] |
| A 3½ inch Submarine Gun in Action Showing the Deck Well and Manner of Operation | [118] |
| 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 | [136] |
| A Marine Wireless Installation | [150] |
| The Crew of a Submarine (Note Sailor Going Below through Hatch in After-deck) | [166] |
| A German U-Boat “Breaking Water” Preparatory to Examining the Cargo of an Enemy ship | [178] |
| Three Eighty-Foot Gasolene Chasers on their Way to Patrol Duty | [188] |
| Navigating the “Deutschland” by Means of the Deck Control (Note Open Hatch Leading to Conning Tower) | [202] |