SEA BOOKS k NEW INFORMATION AND ORDER INSTRUCTIONS PLEASE READ . ... Power operation by Steam Gun Boats and other coastal forces. ... The main gun armament of our a#39;8\ a#39;Ua#39; and a#39; V class Submarines. ... ships and ambulance trains which served the British armed forces so faithfully until rendered obsolete by CASEVAC. ... 7 a Leander class Frigate Conversions; HMS Terpsichore; Japanese B type Submarine at War PART I; The American 5inch/38 Dual Purpose Gun.