SM UB-30

	SM UB-45, a U-boat similar to UB-30
History
German Empire
Name	UB-30
Ordered	22 July 1915
Builder	Blohm & Voss, Hamburg
Cost	1,152,000 German Papiermark
Yard number	254
Launched	16 November 1915
Completed	16 March 1916
Commissioned	18 March 1916
Fate	Sunk 13 August 1918 by British warships
General characteristics
Class & type	Type UB II submarine
Displacement	274 t (270 long tons) surfaced; 303 t (298 long tons) submerged;
Length	36.90 m (121 ft 1 in) o/a; 27.90 m (91 ft 6 in) pressure hull;
Beam	4.37 m (14 ft 4 in) o/a; 3.85 m (12 ft 8 in) pressure hull;
Draught	3.69 m (12 ft 1 in)
Propulsion	1 × propeller shaft; 2 × 6-cylinder diesel engine, 270 PS (200 kW; 270 bhp); 2 × electric motor, 280 PS (210 kW; 280 shp);
Speed	9.06 knots (16.78 km/h; 10.43 mph) surfaced; 5.71 knots (10.57 km/h; 6.57 mph) submerged;
Range	7,030 nmi (13,020 km; 8,090 mi) at 5 knots (9.3 km/h; 5.8 mph) surfaced; 45 nmi (83 km; 52 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged;
Test depth	50 m (160 ft)
Complement	2 officers, 21 men
Armament	2 × 50 cm (19.7 in) torpedo tubes; 4 × torpedoes (later 6); 1 × 8.8 cm (3.5 in) Uk L/30 deck gun;
Notes	42-second diving time
Service record
Part of:	Baltic Flotilla; 8 May 1916 – 23 February 1917; Flandern Flotilla; 23 February 1917 – 13 August 1918;
Commanders:	Kptlt. Kurt Schapler; 18 March – 1 October 1916; Oblt.z.S. Freiherr Cassius von Montigny; 2 October 1916 – 7 August 1917; Kptlt. Wilhelm Rhein; 8 August 1917 – 21 April 1918; Oblt.z.S. Rudolf Steir; 22 April – 13 August 1918;
Operations:	19 patrols
Victories:	18 merchant ships sunk ; (19,650 GRT); 2 merchant ships damaged ; (12,007 GRT);

SM UB-30 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 22 July 1915 and launched on 16 November 1915. She was commissioned into the German Imperial Navy on 18 March 1916 as SM UB-30.

The submarine sank 18 ships in 19 patrols. They included the William Cory & Son collier SS Vernon in the North Sea off Spurn on 31 August 1917 and the Witherington and Everett Steam Ship Company collier SS Lightfoot in the English Channel off Selsey Bill on 16 March 1918.

UB-30 was sunk by two depth charges from HMS Landrail south of Goodwin Sands at 51°9′N 1°46′E / 51.150°N 1.767°E / 51.150; 1.767 on 13 August 1918.

History
SM UB-45, a U-boat similar to UB-30
German Empire
Name	UB-30
Ordered	22 July 1915
Builder	Blohm & Voss, Hamburg
Cost	1,152,000 German Papiermark
Yard number	254
Launched	16 November 1915
Completed	16 March 1916
Commissioned	18 March 1916
Fate	Sunk 13 August 1918 by British warships
General characteristics
Class & type	Type UB II submarine
Displacement	274 t (270 long tons) surfaced 303 t (298 long tons) submerged
Length	36.90 m (121 ft 1 in) o/a 27.90 m (91 ft 6 in) pressure hull
Beam	4.37 m (14 ft 4 in) o/a 3.85 m (12 ft 8 in) pressure hull
Draught	3.69 m (12 ft 1 in)
Propulsion	1 × propeller shaft 2 × 6-cylinder diesel engine, 270 PS (200 kW; 270 bhp) 2 × electric motor, 280 PS (210 kW; 280 shp)
Speed	9.06 knots (16.78 km/h; 10.43 mph) surfaced 5.71 knots (10.57 km/h; 6.57 mph) submerged
Range	7,030 nmi (13,020 km; 8,090 mi) at 5 knots (9.3 km/h; 5.8 mph) surfaced 45 nmi (83 km; 52 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	50 m (160 ft)
Complement	2 officers, 21 men
Armament	2 × 50 cm (19.7 in) torpedo tubes 4 × torpedoes (later 6) 1 × 8.8 cm (3.5 in) Uk L/30 deck gun
Notes	42-second diving time
Service record
Part of:	Baltic Flotilla 8 May 1916 – 23 February 1917 Flandern Flotilla 23 February 1917 – 13 August 1918
Commanders:	Kptlt. Kurt Schapler 18 March – 1 October 1916 Oblt.z.S. Freiherr Cassius von Montigny 2 October 1916 – 7 August 1917 Kptlt. Wilhelm Rhein 8 August 1917 – 21 April 1918 Oblt.z.S. Rudolf Steir 22 April – 13 August 1918
Operations:	19 patrols
Victories:	18 merchant ships sunk (19,650 GRT) 2 merchant ships damaged (12,007 GRT)