The Listeners: U-boat Hunters During the Great War Museum Collectibles This expertly handcrafted replica of

This expertly handcrafted replica of a trench gas alarm was made to exact specifications

published in 1993

and military planning documents

decided to strike against the British ring of steel

The Listeners: U-boat Hunters During the Great War Museum Collectibles This expertly handcrafted replica ofDescription by Roy R. Manstan Hardcover An untold story of scientists and engineers who changed the course of World War I. Roy R. Manstan's new book documents the rise of German submarines in World War I and the Allies' successful response of tracking them with innovative listening devicesprecursors to modern sonar. The Listeners: U boat Hunters During the Great War details the struggle to find a solution to the unanticipated efficiency of the German