6 x 45 cm torpedo tubes; 12 mines Performance: Speed ; Range at Ships in class: 8 (, , , , and to ) Service: Commissioned 1915, one lost in World War I, five scuttled at Scapa Flow Submarines (Unterseeboot) Fleet and attack submarines Type 212 Displacement: 1,830 tons submerged Armament: 6 x 533 mm torpedo tubes with 12 x torpedoes; 24 x mines external; IDAS missiles Performance: Speed submerged; Range at submerged, at surfaced; Depth 700 m Ships in class: 4 (U-31 to U-34), 2 ordered, 6 more planned Commissioned: 4 commissioned Type XXI Displacement: 1,819 tons submerged Armament: 6 x 533 mm torpedo tubes with 23 x torpedoes or 12 x mines Performance: Speed submerged; Range at submerged, at surfaced Ships in class: 118 (U-2501 to U-2531, U-2533 to U-2536, U-2538 to U-2546, U-2548, U-2551, U-2552, U-3001 to U-3035, U-3037 to U-3041, U-3044, and U-3501 to U-3530) Commissioned: 1944 Fate: Few were ever launched, and all were captured by Allied Forces at the end of the World War II. Type XVIII Displacement: 1,652 tons submerged Armament: 23 x torpedoes Performance: Speed submerged; Range at submerged, at surfaced Ships in class: 2 (U-796 and U-797) Commissioned: None Fate: Cancelled while building March 1944 Type IXD Displacement: 1,232 tons submerged Armament: 6 x 533 mm torpedo tubes with 24 x torpedoes or 48 x mines Performance: Speed submerged; Range at submerged, at surfaced; Depth 230 m Ships in class: 30 (U-177 to U-182, U-195 to U-200, U-847 to U-852, U-859 to U-864, and U-871 to U-876 Commissioned: 1942 Fate: Type IXC/40 Displacement: 1,232 tons submerged Armament: 6 x 533 mm torpedo tubes with 22 x torpedoes or 44 x mines Performance: Speed submerged; Range at submerged, at surfaced; Depth 230 m Ships in class: 87 (U-167 to U-170, U-183 to U-194, U-525 to U-550, U-801 to U-806, U-841 to U-846, U-853 to U-858, U-865 to U-870, U-877 to U-881, U-889, and U-1221 to U-1235) Commissioned: 1942 Fate: Type IXC Displacement: 1,232 tons submerged Armament: 6 x 533 mm torpedo tubes with 22 x torpedoes or 44 x mines Performance: Speed submerged; Range at submerged, at surfaced; Depth 230 m Ships in class: 54 (U-66 to U-68, U-125 to U-131, U-153 to U-166, U-171 to U-176, and U-501 to U-524) Commissioned: 1941 Fate: Type IXB Displacement: 1,178 tons submerged Armament: 6 x 533 mm torpedo tubes with 22 (32) x torpedoes