SM UC-1

History
German Empire
Name	UC-1
Ordered	November 1914
Builder	AG Vulcan, Hamburg
Yard number	45
Launched	26 April 1915
Commissioned	5 July 1915
Fate	Missing since 18 July 1917
General characteristics
Class and type	German Type UC I submarine
Displacement	168 t (165 long tons), surfaced; 183 t (180 long tons), submerged;
Length	33.99 m (111 ft 6 in) o/a; 29.62 m (97 ft 2 in) pressure hull;
Beam	3.15 m (10 ft 4 in)
Draft	3.04 m (10 ft)
Propulsion	1 × propeller shaft; 1 × 6-cylinder, 4-stroke diesel engine, 90 PS (66 kW; 89 bhp); 1 × electric motor, 175 PS (129 kW; 173 shp);
Speed	6.20 knots (11.48 km/h; 7.13 mph), surfaced; 5.22 knots (9.67 km/h; 6.01 mph), submerged;
Range	780 nmi (1,440 km; 900 mi) at 5 knots (9.3 km/h; 5.8 mph) surfaced; 50 nmi (93 km; 58 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged;
Test depth	50 m (160 ft)
Complement	14
Armament	6 × 100 cm (39 in) mine tubes; 12 × UC 120 mines; 1 × 8 mm (0.31 in) machine gun;
Service record
Part of:	Flandern Flotilla; 25 June 1915 – 19 July 1917;
Commanders:	Oblt.z.S. Egon von Werner; 7 May 1915 – 13 April 1916; Oblt.z.S. Kurt Ramien; 14 April – 31 August 1916; Oblt.z.S. Heinrich Küstner; 1 September – 3 November 1916; Oblt.z.S. Hugo Thielmann; 4 November – 16 December 1916; Lt.z.S. Oskar Steckelberg; 17 December 1916 – 7 January 1917; Oblt.z.S. Hugo Thielmann; 8 January 1917 – 17 March 1917; Oblt.z.S. Walter Warzecha; 18 March – 1 June 1917; Oblt.z.S. Christian Mildenstein; 2 June – 19 July 1917;
Operations:	80 patrols
Victories:	24 merchant ships sunk ; (53,249 GRT); 5 warships sunk ; (3,067 tons); 12 auxiliary warships sunk ; (2,620 GRT); 9 merchant ships damaged ; (52,899 GRT);

SM UC-1 was a German Type UC I minelayer submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat had been ordered by November 1914 and was launched on 26 April 1915. She was commissioned into the German Imperial Navy on 5 July 1915 as SM UC-1. Mines laid by UC-1 in her 80 patrols were credited with sinking 41 ships. UC-1 disappeared after 18 July 1917. UC-1 was sunk on 24 July 1917 by F2B Felixstowe flying boat. Standard practice was to fly along the U boat and drop 2 250lb bombs astride it, hoping to cause leaks and give time for a destroyer to collect the submariners and sink it. On this occasion, by fluke, one bomb went through the conning tower and blew the base out of UC1. MFG Mill was awarded the DFC for this but he refused to wear it because of the total loss of life <london Gazette> <MFG Mill Diaries>

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