SM UC-18

History
German Empire
Name	UC-18
Ordered	29 August 1915
Builder	Blohm & Voss, Hamburg
Yard number	268
Launched	4 March 1916
Commissioned	15 August 1916
Fate	Sunk by British Q ship, 19 February 1917
General characteristics
Class & type	Type UC II submarine
Displacement	417 t (410 long tons), surfaced; 493 t (485 long tons), submerged;
Length	49.35 m (161 ft 11 in) o/a; 39.30 m (128 ft 11 in) pressure hull;
Beam	5.22 m (17 ft 2 in) o/a; 3.65 m (12 ft) pressure hull;
Draught	3.68 m (12 ft 1 in)
Propulsion	2 × propeller shafts; 2 × 6-cylinder, 4-stroke diesel engines, 500 PS (370 kW; 490 bhp); 2 × electric motors, 460 PS (340 kW; 450 shp);
Speed	11.6 knots (21.5 km/h; 13.3 mph), surfaced; 7.0 knots (13.0 km/h; 8.1 mph), submerged;
Range	9,430 nautical miles (17,460 km; 10,850 mi) at 7 knots (13 km/h; 8.1 mph), surfaced; 55 nautical miles (102 km; 63 mi) at 4 knots (7.4 km/h; 4.6 mph), submerged;
Test depth	50 m (160 ft)
Complement	26
Armament	6 × 100 cm (39.4 in) mine tubes; 18 × UC 200 mines; 3 × 50 cm (19.7 in) torpedo tubes (2 bow/external; one stern); 7 × torpedoes; 1 × 8.8 cm (3.5 in) Uk L/30 deck gun;
Notes	35-second diving time
Service record
Part of:	Flandern Flotilla; 19 October 1916 – 19 February 1917;
Commanders:	Oblt.z.S. Wilhelm Kiel; 15 August 1916 – 19 February 1917;
Operations:	6 patrols
Victories:	30 merchant ships sunk ; (32,684 GRT); 1 warship sunk ; (432 tons); 3 auxiliary warships sunk ; (1,227 GRT); 3 merchant ships damaged ; (21,157 GRT);

SM UC-18 was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I.

The U-boat was ordered on 29 August 1915 and was launched on 4 March 1916. She was commissioned into the German Imperial Navy on 15 August 1916 as SM UC-18. In 6 patrols UC-18 was credited with sinking 34 ships, either by torpedo or by mines laid. UC-18 was sunk by the British Q ship HMS Lady Olive on 19 February 1917.

History

German Empire
Name	UC-18
Ordered	29 August 1915
Builder	Blohm & Voss, Hamburg
Yard number	268
Launched	4 March 1916
Commissioned	15 August 1916
Fate	Sunk by British Q ship, 19 February 1917
General characteristics
Class & type	Type UC II submarine
Displacement	417 t (410 long tons), surfaced 493 t (485 long tons), submerged
Length	49.35 m (161 ft 11 in) o/a 39.30 m (128 ft 11 in) pressure hull
Beam	5.22 m (17 ft 2 in) o/a 3.65 m (12 ft) pressure hull
Draught	3.68 m (12 ft 1 in)
Propulsion	2 × propeller shafts 2 × 6-cylinder, 4-stroke diesel engines, 500 PS (370 kW; 490 bhp) 2 × electric motors, 460 PS (340 kW; 450 shp)
Speed	11.6 knots (21.5 km/h; 13.3 mph), surfaced 7.0 knots (13.0 km/h; 8.1 mph), submerged
Range	9,430 nautical miles (17,460 km; 10,850 mi) at 7 knots (13 km/h; 8.1 mph), surfaced 55 nautical miles (102 km; 63 mi) at 4 knots (7.4 km/h; 4.6 mph), submerged
Test depth	50 m (160 ft)
Complement	26
Armament	6 × 100 cm (39.4 in) mine tubes 18 × UC 200 mines 3 × 50 cm (19.7 in) torpedo tubes (2 bow/external; one stern) 7 × torpedoes 1 × 8.8 cm (3.5 in) Uk L/30 deck gun
Notes	35-second diving time
Service record
Part of:	Flandern Flotilla 19 October 1916 – 19 February 1917
Commanders:	Oblt.z.S. Wilhelm Kiel 15 August 1916 – 19 February 1917
Operations:	6 patrols
Victories:	30 merchant ships sunk (32,684 GRT) 1 warship sunk (432 tons) 3 auxiliary warships sunk (1,227 GRT) 3 merchant ships damaged (21,157 GRT)