Ships in class: 30 (M27 to M56) Service: Commissioned 1916, 10 lost in World War I Type 1914 Displacement: 475 tons Armament: 2 x 8.8 cm guns; 1 x 3.7 cm revolver cannon; 30 x mines Performance: Speed ; Range at Ships in class: 26 (M1 to M26) Service: Commissioned 1914 to 1917, 11 lost in World War I Flachgehende Minensuchboote Displacement: 205 tons Armament: 1 x 8.8 cm gun Performance: Speed ; Range at Ships in class: 66 (FM1 to FM66) Service: 54 launched, commissioned 1918 to 1919, 6 lost in World War II Minenräumboot Displacement: 155 tons Armament: 1 x 3.7 cm AA gun; 3 x 2 cm AA guns; 1 x 8.6 cm Föhn launcher Performance: Speed Ships in class: 300 Service: About 160 lost during World War II Mine layers (Minenleger) Displacement: 2,500 tons Armament: 8 x 8.8 cm guns; 288 x mines Performance: Speed ; Range at Ships in class: 1 Service: Commissioned 1908, scrapped 1921 Auxiliary mine layer (Hilfsminenleger) Displacement: 300 to 4,200 tons Ships in class: 16 conversions Service: Converted from various merchant and passenger ships, commissioned as mine layers in 1914, all survived World War I, most returned to civil duties Küstenminenleger Displacement: 19 tons Armament: 2 x 2 cm guns; 4 mines Performance: Speed ; Range at Ships in class: 36 (KM1 to KM36) Service: Commissioned 1941 to 1943 Amphibious warfare vessels Landing craft (Landungsboote) (Type 520) Displacement: 430 tons Armament: 2 x 20 mm autocannon; mines Capacity: 150 t Performance: Speed Ships in class: 22 Service: Commissioned from 1965, two remain in active service Type 554 Displacement: 375 tons Armament: 2 x 12.7 mm machineguns Capacity: 125 t or 400 troops Performance: Speed ; Range at Ships in class: 1 Service: 1958 to 1964 Type 521 Displacement: 111 tons Armament: Small arms Capacity: 53 t Performance: Speed Ships in class: 28 Service: Commissioned from 1965, decommissioned Type 552 Displacement: 13 tons Capacity: 0.4 t or 36 troops Performance: Speed ; Range Ships in class: 9 Service: 1958 to 1964 Auxiliary ships Tenders and replenishment ships (Type 702) Displacement: 20,240 tons Armament: 4 x 27 mm autocannon; Fliegerfaust 2 missiles Aircraft: Helicopter deck with hangar for two large helicopters Ships in class: 2: and Service: Commissioned from 2001, both in active service, 2 more planned ( and 1 other) (Type 704A) Displacement: 14,170 tons Capacity: 44,760 m Performance: Speed Ships in