SM UC-57

	UC-57's memorial; Major Nordström lay the Jäger association's wreath in 1934
History
German Empire
Name	UC-57
Ordered	12 January 1916
Builder	Kaiserliche Werft, Danzig
Yard number	39
Laid down	14 March 1916
Launched	7 September 1916
Commissioned	22 January 1917
Fate	Disappeared after 18 November 1917; probably sunk by mine in Gulf of Finland
General characteristics
Class & type	Type UC II submarine
Displacement	415 t (408 long tons), surfaced; 498 t (490 long tons), submerged;
Length	52.69 m (172 ft 10 in) o/a; 40.96 m (134 ft 5 in) pressure hull;
Beam	5.22 m (17 ft 2 in) o/a; 3.65 m (12 ft) pressure hull;
Draught	3.61 m (11 ft 10 in)
Propulsion	2 × propeller shafts; 2 × 6-cylinder, 4-stroke diesel engines, 580–600 PS (430–440 kW; 570–590 shp); 2 × electric motors, 620 PS (460 kW; 610 shp);
Speed	11.6 knots (21.5 km/h; 13.3 mph), surfaced; 7.3 knots (13.5 km/h; 8.4 mph), submerged;
Range	8,660–9,450 nmi (16,040–17,500 km; 9,970–10,870 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	30-second diving time
Service record
Part of:	Baltic Flotilla; 6 May – 18 November 1917;
Commanders:	Kptlt. Friedrich Wißmann; 22 January – 18 November 1917;
Operations:	7 patrols
Victories:	5 merchant ships sunk ; (271 GRT); 2 merchant ships taken as prize ; (3,863 GRT);

SM UC-57 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, laid down on 14 March 1916, and was launched on 7 September 1916. She was commissioned into the German Imperial Navy on 22 January 1917 as SM UC-57. In seven patrols UC-57 was credited with sinking 5 ships, either by torpedo or by mines laid.

UC-57 disappeared in 1917 after landing a party of Finnish Jägers and 4 tons of munitions on the island of Hamnskär, circa 30 kilometres (19 mi) from Loviisa, on 18 November. UC-57 was going to remain on the seabed overnight and then return to Germany but never arrived. She was probably sunk by a Russian mine.

History
UC-57's memorial; Major Nordström lay the Jäger association's wreath in 1934
German Empire
Name	UC-57
Ordered	12 January 1916
Builder	Kaiserliche Werft, Danzig
Yard number	39
Laid down	14 March 1916
Launched	7 September 1916
Commissioned	22 January 1917
Fate	Disappeared after 18 November 1917; probably sunk by mine in Gulf of Finland
General characteristics
Class & type	Type UC II submarine
Displacement	415 t (408 long tons), surfaced 498 t (490 long tons), submerged
Length	52.69 m (172 ft 10 in) o/a 40.96 m (134 ft 5 in) pressure hull
Beam	5.22 m (17 ft 2 in) o/a 3.65 m (12 ft) pressure hull
Draught	3.61 m (11 ft 10 in)
Propulsion	2 × propeller shafts 2 × 6-cylinder, 4-stroke diesel engines, 580–600 PS (430–440 kW; 570–590 shp) 2 × electric motors, 620 PS (460 kW; 610 shp)
Speed	11.6 knots (21.5 km/h; 13.3 mph), surfaced 7.3 knots (13.5 km/h; 8.4 mph), submerged
Range	8,660–9,450 nmi (16,040–17,500 km; 9,970–10,870 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	30-second diving time
Service record
Part of:	Baltic Flotilla 6 May – 18 November 1917
Commanders:	Kptlt. Friedrich Wißmann 22 January – 18 November 1917
Operations:	7 patrols
Victories:	5 merchant ships sunk (271 GRT) 2 merchant ships taken as prize (3,863 GRT)