SM U-85

History
German Empire
Name	U-85
Ordered	23 June 1915
Builder	Germaniawerft, Kiel
Yard number	255
Laid down	29 November 1915
Launched	22 August 1916
Commissioned	23 October 1916
Fate	Foundered in North Sea after 7 March 1917, 38 dead (all hands lost).
General characteristics
Displacement	808 t (795 long tons) surfaced; 946 t (931 long tons) submerged;
Length	70.06 m (229 ft 10 in) (o/a); 55.55 m (182 ft 3 in) (pressure hull);
Beam	6.30 m (20 ft 8 in) (oa); 4.15 m (13 ft 7 in) (pressure hull);
Height	8.00 m (26 ft 3 in)
Draught	4.02 m (13 ft 2 in)
Installed power	2 × 2,400 PS (1,765 kW; 2,367 shp) surfaced; 2 × 1,200 PS (883 kW; 1,184 shp) submerged;
Propulsion	2 shafts, 2 × 1.70 m (5 ft 7 in) propellers
Speed	16.8 knots (31.1 km/h; 19.3 mph) surfaced; 9.1 knots (16.9 km/h; 10.5 mph) submerged;
Range	11,220 nmi (20,780 km; 12,910 mi) at 8 knots (15 km/h; 9.2 mph) surfaced; 56 nmi (104 km; 64 mi) at 5 knots (9.3 km/h; 5.8 mph) submerged;
Test depth	50 m (160 ft)
Complement	4 officers, 31 enlisted
Armament	4 × 50 cm (19.7 in) torpedo tubes (two bow, two stern); 12-16 torpedoes; 1 × 10.5 cm (4.1 in) SK L/45 deck gun (from 1917);
Service record
Part of:	IV Flotilla; 15 January – 12 March 1917;
Commanders:	Kptlt. Willy Petz; 23 October 1916 – 12 March 1917;
Operations:	3 patrols
Victories:	4 merchant ships sunk ; (20,225 GRT); 1 merchant ship damaged ; (7,608 GRT);

SM U-85 was one of the 329 submarines serving in the Imperial German Navy in World War I. U-85 was engaged in the naval warfare and took part in the First Battle of the Atlantic.

Initially, U-81 to U-83 had one 10.5 cm gun with 140-240 rounds. U-84 - U-86 on the other hand had two 8.8 cm guns. In 1917, U-84 - U-86 were refitted with a single 10.5 cm gun (240 rounds)

History

German Empire
Name	U-85
Ordered	23 June 1915
Builder	Germaniawerft, Kiel
Yard number	255
Laid down	29 November 1915
Launched	22 August 1916
Commissioned	23 October 1916
Fate	Foundered in North Sea after 7 March 1917, 38 dead (all hands lost).
General characteristics
Displacement	808 t (795 long tons) surfaced 946 t (931 long tons) submerged
Length	70.06 m (229 ft 10 in) (o/a) 55.55 m (182 ft 3 in) (pressure hull)
Beam	6.30 m (20 ft 8 in) (oa) 4.15 m (13 ft 7 in) (pressure hull)
Height	8.00 m (26 ft 3 in)
Draught	4.02 m (13 ft 2 in)
Installed power	2 × 2,400 PS (1,765 kW; 2,367 shp) surfaced 2 × 1,200 PS (883 kW; 1,184 shp) submerged
Propulsion	2 shafts, 2 × 1.70 m (5 ft 7 in) propellers
Speed	16.8 knots (31.1 km/h; 19.3 mph) surfaced 9.1 knots (16.9 km/h; 10.5 mph) submerged
Range	11,220 nmi (20,780 km; 12,910 mi) at 8 knots (15 km/h; 9.2 mph) surfaced 56 nmi (104 km; 64 mi) at 5 knots (9.3 km/h; 5.8 mph) submerged
Test depth	50 m (160 ft)
Complement	4 officers, 31 enlisted
Armament	4 × 50 cm (19.7 in) torpedo tubes (two bow, two stern) 12-16 torpedoes 1 × 10.5 cm (4.1 in) SK L/45 deck gun (from 1917)
Service record
Part of:	IV Flotilla 15 January – 12 March 1917
Commanders:	Kptlt. Willy Petz 23 October 1916 – 12 March 1917
Operations:	3 patrols
Victories:	4 merchant ships sunk (20,225 GRT) 1 merchant ship damaged (7,608 GRT)