Concept
The German torpedo boat T22 was one of fifteen Type 39 torpedo boats built for the Kriegsmarine (German Navy) during World War II. Completed in early 1942, the ship was transferred to France later that year where she escorted blockade runners and Axis submarines through the Bay of Biscay. T22 also laid minefields in the English Channel in mid-1943. She participated in the Battle of Sept-Îles, where she crippled a British destroyer, and the Battle of the Bay of Biscay later that year. After returning to Germany in early 1944, T22 struck a pair of mines in Narva Bay in August and blew up, with the loss of 143 men. Type 39 torpedo boat The Type 39 torpedo boat was conceived as a general-purpose design, much larger than preceding German torpedo boats. The ships had an overall length of and were long at the waterline. They had a beam of , a draft of at deep load and displaced at standard load and at deep load. Their crew numbered 206 officers and sailors. The Type 39s were fitted with a pair of geared steam turbine sets, each driving one propeller, using steam from four high-pressure water-tube boilers. The turbines were designed to produce which was intended give the ships a maximum speed of . They carried enough fuel oil to give them a range of at . As built, the Type 39 ships mounted four SK C/32 guns in single mounts protected by gun shields; one forward of the superstructure, one between the funnels, and two aft, one superfiring over the other. Anti-aircraft defense was provided by four SK C/30 AA guns in two twin-gun mounts on platforms abaft the rear funnel, six C/38 guns in one quadruple mount on the aft superstructure and a pair of single mounts on the bridge wings. They carried six above-water torpedo tubes in two triple mounts amidships and could also carry 30 mines; the full complement of 60 mines made the ships top-heavy which could be dangerous in bad weather. For anti-submarine work the ships were fitted with a S-Gerät sonar and four depth charge launchers. The Type 39s were equipped with a FuMO 21 radar.
