FIRST EDITION, 1922. Xii + 276 pp., frontis., + 44 other photo-plates & 16 diagrams. Blue cloth ; gilt ; edges uncut. 22 x 15 cm. Foxing chiefly to edges as usual o/w an exceptionally crisp and bright copy : V.G.+. The author had first-hand experience of his subject, having served in "Q" ships during the First World War. These 'Mystery' ships had all the innocent appearance of a merchant steamer or sailing vessel but to the unsuspecting U-boat surfacing to attack by gunfire, or to take a prize, the Q-ship was a deadly and heavily armed warship manned by the Royal Navy with hidden guns capable of blowing a submarine out of the water. Their most popular hunting ground was off the south-west coast of Ireland as German U-boats, from 1915, concentrated their attacks on shipping in the Western Approaches. Q-ships proved to be a highly successful anti-U-boat weapon during the First World War. Their exploits were kept secret until after the war ' this being the first full account of their deeds and one of only two contemporary books on the subject. Illustrated with 45 photographs and 16 diagrams, it became one of Chatterton's most popular books. A bright, crisp copy.