SM UC-66

History
German Empire
Name	UC-66
Ordered	12 January 1916
Builder	Blohm & Voss, Hamburg
Yard number	282
Launched	15 July 1916
Commissioned	14 November 1916
Fate	Sunk by HM seaplane No. 8656 off the Isles of Scilly on 27 May 1917
General characteristics
Class & type	Type UC II submarine
Displacement	427 t (420 long tons), surfaced; 508 t (500 long tons), submerged;
Length	50.35 m (165 ft 2 in) o/a; 40.30 m (132 ft 3 in) pressure hull;
Beam	5.22 m (17 ft 2 in) o/a; 3.65 m (12 ft) pressure hull;
Draught	3.64 m (11 ft 11 in)
Propulsion	2 × propeller shafts; 2 × 6-cylinder, 4-stroke diesel engines, 600 PS (440 kW; 590 shp); 2 × electric motors, 620 PS (460 kW; 610 shp);
Speed	12.0 knots (22.2 km/h; 13.8 mph), surfaced; 7.4 knots (13.7 km/h; 8.5 mph), submerged;
Range	10,420 nmi (19,300 km; 11,990 mi) at 7 knots (13 km/h; 8.1 mph) surfaced; 52 nmi (96 km; 60 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; 3 February – 27 May 1917;
Commanders:	Oblt.z.S. Herbert Pustkuchen; 18 November 1916 – 27 May 1917;
Operations:	5 patrols
Victories:	29 merchant ships sunk ; (41,793 GRT); 2 warships sunk ; (2,500 tons); 1 auxiliary warship sunk ; (213 GRT); 4 merchant ships damaged ; (15,188 GRT); 2 auxiliary warships damaged ; (12,222 GRT);

SM UC-66 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 12 January 1916 and was launched on 15 July 1916. She was commissioned into the German Imperial Navy on 14 November 1916 as SM UC-66. In five patrols UC-66 was credited with sinking 32 ships, either by torpedo or by mines laid. UC-66 was sunk by HM seaplane No. 8656, a Curtiss Model H-12, off the Isles of Scilly on 27 May 1917. The wreck was found by divers in 2009. This is a notable early aircraft success against a U-boat.

History

German Empire
Name	UC-66
Ordered	12 January 1916
Builder	Blohm & Voss, Hamburg
Yard number	282
Launched	15 July 1916
Commissioned	14 November 1916
Fate	Sunk by HM seaplane No. 8656 off the Isles of Scilly on 27 May 1917
General characteristics
Class & type	Type UC II submarine
Displacement	427 t (420 long tons), surfaced 508 t (500 long tons), submerged
Length	50.35 m (165 ft 2 in) o/a 40.30 m (132 ft 3 in) pressure hull
Beam	5.22 m (17 ft 2 in) o/a 3.65 m (12 ft) pressure hull
Draught	3.64 m (11 ft 11 in)
Propulsion	2 × propeller shafts 2 × 6-cylinder, 4-stroke diesel engines, 600 PS (440 kW; 590 shp) 2 × electric motors, 620 PS (460 kW; 610 shp)
Speed	12.0 knots (22.2 km/h; 13.8 mph), surfaced 7.4 knots (13.7 km/h; 8.5 mph), submerged
Range	10,420 nmi (19,300 km; 11,990 mi) at 7 knots (13 km/h; 8.1 mph) surfaced 52 nmi (96 km; 60 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 3 February – 27 May 1917
Commanders:	Oblt.z.S. Herbert Pustkuchen 18 November 1916 – 27 May 1917
Operations:	5 patrols
Victories:	29 merchant ships sunk (41,793 GRT) 2 warships sunk (2,500 tons) 1 auxiliary warship sunk (213 GRT) 4 merchant ships damaged (15,188 GRT) 2 auxiliary warships damaged (12,222 GRT)