SM UB-57

	UB-148 at sea, a U-boat similar to UB-57.
History
German Empire
Name	UB-57
Ordered	20 May 1916
Builder	AG Weser, Bremen
Cost	3,276,000 German Papiermark
Yard number	269
Laid down	13 September 1916
Launched	21 June 1917
Commissioned	30 July 1917
Fate	Sunk 14 August 1918 at 51°56′N 02°02′E / 51.933°N 2.033°E by a mine, 34 dead
General characteristics
Class and type	Type UB III submarine
Displacement	516 t (508 long tons) surfaced; 646 t (636 long tons; 712 short tons) submerged;
Length	55.85 m (183 ft 3 in) (o/a)
Beam	5.80 m (19 ft)
Draught	3.72 m (12 ft 2 in)
Propulsion	2 × propeller shaft; 2 × Körting four-stroke 6-cylinder diesel engines, 1,050 bhp (780 kW); 2 × Siemens-Schuckert electric motors, 780 shp (580 kW);
Speed	13.4 knots (24.8 km/h; 15.4 mph) surfaced; 7.8 knots (14.4 km/h; 9.0 mph) submerged;
Range	9,020 nmi (16,710 km; 10,380 mi) at 6 knots (11 km/h; 6.9 mph) surfaced; 55 nmi (102 km; 63 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged;
Test depth	50 m (160 ft)
Complement	3 officers, 31 men
Armament	5 × 50 cm (19.7 in) torpedo tubes (4 bow, 1 stern); 10 torpedoes; 1 × 8.8 cm (3.46 in) deck gun;
Service record
Part of:	Flandern I Flotilla; 20 September 1917 – 14 August 1918;
Commanders:	Kptlt. Otto Steinbrinck; 3 July 1917 – 1 January 1918; Oblt.z.S. Johannes Lohs; 2 January – 14 August 1918;
Operations:	11 patrols
Victories:	45 merchant ships sunk ; (112,535 GRT); 1 auxiliary warship sunk ; (9,500 GRT); 11 merchant ships damaged ; (64,265 GRT);

SM UB-57 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the Flanders Flotilla of the German Imperial Navy on 30 July 1917 as SM UB-57.^{[Note 1]}

She operated as part of the Flanders Flotilla based in Zeebrugge. UB-57 was sunk at 23:00 on 14 August 1918 at 51°56′N 02°02′E / 51.933°N 2.033°E / 51.933; 2.033 after striking a mine, 34 crew members lost their lives in the event.^[1]

^ ^a ^b ^c ^d ^e ^f Gröner 1991, pp. 25–30.
^ Rössler 1979, p. 55.
^ Helgason, Guðmundur. "WWI U-boats: UB 57". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 26 July 2014.

Cite error: There are <ref group=Note> tags on this page, but the references will not show without a {{reflist|group=Note}} template (see the help page).

[FOOTNOTEGröner199125–30-1] ^ ^a ^b ^c ^d ^e ^f Gröner 1991, pp. 25–30.

[FOOTNOTERössler197955-2] Rössler 1979, p. 55.

[uboatnet-3] Helgason, Guðmundur. "WWI U-boats: UB 57". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 26 July 2014.

[2]

[3]

[1]

[Note 1]

History
UB-148 at sea, a U-boat similar to UB-57.
German Empire
Name	UB-57
Ordered	20 May 1916^[2]
Builder	AG Weser, Bremen
Cost	3,276,000 German Papiermark
Yard number	269
Laid down	13 September 1916^[3]
Launched	21 June 1917^[1]
Commissioned	30 July 1917^[1]
Fate	Sunk 14 August 1918 at 51°56′N 02°02′E / 51.933°N 2.033°E / 51.933; 2.033 by a mine, 34 dead^[1]
General characteristics ^[1]
Class and type	Type UB III submarine
Displacement	516 t (508 long tons) surfaced 646 t (636 long tons; 712 short tons) submerged
Length	55.85 m (183 ft 3 in) (o/a)
Beam	5.80 m (19 ft)
Draught	3.72 m (12 ft 2 in)
Propulsion	2 × propeller shaft 2 × Körting four-stroke 6-cylinder diesel engines, 1,050 bhp (780 kW) 2 × Siemens-Schuckert electric motors, 780 shp (580 kW)
Speed	13.4 knots (24.8 km/h; 15.4 mph) surfaced 7.8 knots (14.4 km/h; 9.0 mph) submerged
Range	9,020 nmi (16,710 km; 10,380 mi) at 6 knots (11 km/h; 6.9 mph) surfaced 55 nmi (102 km; 63 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	50 m (160 ft)
Complement	3 officers, 31 men^[1]
Armament	5 × 50 cm (19.7 in) torpedo tubes (4 bow, 1 stern) 10 torpedoes 1 × 8.8 cm (3.46 in) deck gun
Service record
Part of:	Flandern I Flotilla 20 September 1917 – 14 August 1918
Commanders:	Kptlt. Otto Steinbrinck 3 July 1917 – 1 January 1918 Oblt.z.S. Johannes Lohs 2 January – 14 August 1918
Operations:	11 patrols
Victories:	45 merchant ships sunk (112,535 GRT) 1 auxiliary warship sunk (9,500 GRT) 11 merchant ships damaged (64,265 GRT)

SM UB-57

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