SM U-64

History
German Empire
Name	U-64
Ordered	17 May 1915
Builder	Germaniawerft, Kiel
Yard number	248
Laid down	19 May 1915
Launched	29 February 1916
Commissioned	15 April 1916
Fate	Sunk 17 June 1918
General characteristics
Class & type	Type U 63 submarine
Displacement	810 t (800 long tons) surfaced; 927 t (912 long tons) submerged;
Length	68.36 m (224 ft 3 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	7.65 m (25 ft 1 in)
Draught	4.04 m (13 ft 3 in)
Installed power	2 × 2,200 PS (1,618 kW; 2,170 shp) surfaced; 2 × 1,200 PS (883 kW; 1,184 shp) submerged;
Propulsion	2 shafts
Speed	16.5 knots (30.6 km/h; 19.0 mph) surfaced; 9.0 knots (16.7 km/h; 10.4 mph) submerged;
Range	9,170 nmi (16,980 km; 10,550 mi) at 8 knots (15 km/h; 9.2 mph) surfaced; 60 nmi (110 km; 69 mi) at 5 knots (9.3 km/h; 5.8 mph) submerged;
Test depth	50 m (164 ft 1 in)
Complement	36
Armament	4 × 50 cm (19.7 in) torpedo tubes (two bow, two stern); 8 torpedoes; 1 × 8.8 cm (3.5 in) SK L/30 deck gun;
Service record
Part of	IV Flotilla; 31 May – 19 November 1916; Pola / Mittelmeer / Mittelmeer I Flotilla; 19 November 1916 – 17 June 1918;
Commanders	Kptlt. Robert Moraht; 15 April 1916 – 17 June 1918;
Operations	10 patrols
Victories	44 merchant ships sunk ; (129,327 GRT); 1 warship sunk ; (18,300 tons); 1 auxiliary warship sunk ; (243 GRT); 3 merchant ships damaged ; (9,420 GRT); 1 merchant ship taken as prize ; (186 GRT);

SM U-64 was a Type U 63 submarine in the Imperial German Navy that served during World War I. She was built in 1916 and served in the Mediterranean Sea.

On 19 March 1917, while on patrol in the Tyrrhenian Sea, U-64 encountered the French battleship Danton 30 nautical miles (56 km; 35 mi) south of Sardinia. U-64 torpedoed Danton which sank in 45 minutes with the loss of 296 men.

During her career, U-64 was under the command of Kapitänleutnant Robert Moraht. She was lost on 17 June 1918 at position 38°07′N 10°27′E / 38.117°N 10.450°E / 38.117; 10.450.