Type U 5 submarine
Type U 5 was a class of U-boats built during World War I by the Kaiserliche Marine. DesignType U 5s had an overall length of 57.30 m (188 ft 0 in) The boats' beam was 5.60 m (18 ft 4 in), the draught was 3.55 m (11 ft 8 in). The boats displaced 505 tonnes (497 long tons) when surfaced and 636 t (626 long tons) when submerged.[1][2] Type U 5s were fitted with two Körting 6-cylinder and two 8-cylinder two-stroke paraffin engines with a total of 900 metric horsepower (662 kW; 888 bhp) for use on the surface and two SSW double-acting electric motors with a total of 760 kW (1,033 PS; 1,019 shp) for underwater use. These engines powered two shafts, which gave the boats a top surface speed of 13.4 knots (24.8 km/h; 15.4 mph), and 10.2 knots (18.9 km/h; 11.7 mph) when submerged. Cruising range was 3,300 nautical miles (6,100 km; 3,800 mi) at 9 knots (17 km/h; 10 mph) on the surface and 55 nmi (102 km; 63 mi) at 5 knots (9.3 km/h; 5.8 mph) submerged.[1][2] Constructional diving depth[a] was 50 m (164 ft 1 in).[3][2] The U-boats were armed with four 45 cm (18 in) torpedo tubes, two fitted in the bow and two in the stern, and carried six torpedoes. The boats' complement was 4 officers and 24 enlisted men.[4][2] Type U 5 U-boats were the first U-boats to be equipped with a radiotelegraphy station. This station had a range of 30 nmi (56 km; 35 mi) between U-boats and double that distanc towards shore stations. Two aerial masts were installed on the deck, which could be lowered from inside the boat. A crude Underwater telegraph consisting of a bell with a clapper activated by compressed air, was also introduced with the Type U 5s, but this system was not satisfactory.[5] Ships
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