Diane-class submarine (1916)

	Daphné at anchor, 1920s
Class overview
Name	Diane
Operators	French Navy
Preceded by	Bellone class
Succeeded by	Dupuy de Lôme class
Built	1913–17
In service	1916–35
Completed	2
Lost	1
Scrapped	1
General characteristics
Type	Submarine
Displacement	673 t (662 long tons) (surfaced); 901 t (887 long tons) (submerged);
Length	68 m (223 ft 1 in) (o/a)
Beam	5.53 m (18 ft 2 in) (deep)
Draft	3.56 m (11 ft 8 in)
Installed power	2 × 800–820 PS (590–600 kW; 790–810 hp) diesel engines; 2 × 700 PS (510 kW; 690 hp) electric motors;
Propulsion	2 shafts
Speed	15 knots (28 km/h; 17 mph) (surfaced); 11.5 knots (21.3 km/h; 13.2 mph) (submerged);
Range	2,500 nmi (4,600 km; 2,900 mi) at 10 knots (19 km/h; 12 mph) (surfaced); 100 nmi (190 km; 120 mi) at 5 knots (9.3 km/h; 5.8 mph) (submerged);
Complement	34 crew
Armament	2 × internal bow 450 mm (17.7 in) torpedo tubes; 2 × external bow 450 mm torpedo tubes; 2 × external stern 450 mm torpedo tubes; 4 × single external 450 mm rotating torpedo launchers; 1 × single 75 mm (3 in) deck gun (Daphné only);

The Diane class consisted of a pair of submarines built for the French Navy during World War I. Completed in 1916–1917 the boats played a limited role in the war. Diane sank with the loss of all hands in 1918, but her sister Daphné survived the war. She was sold for scrap in 1936.

Class overview
Daphné at anchor, 1920s
Name	Diane
Operators	French Navy
Preceded by	Bellone class
Succeeded by	Dupuy de Lôme class
Built	1913–17
In service	1916–35
Completed	2
Lost	1
Scrapped	1
General characteristics
Type	Submarine
Displacement	673 t (662 long tons) (surfaced) 901 t (887 long tons) (submerged)
Length	68 m (223 ft 1 in) (o/a)
Beam	5.53 m (18 ft 2 in) (deep)
Draft	3.56 m (11 ft 8 in)
Installed power	2 × 800–820 PS (590–600 kW; 790–810 hp) diesel engines 2 × 700 PS (510 kW; 690 hp) electric motors
Propulsion	2 shafts
Speed	15 knots (28 km/h; 17 mph) (surfaced) 11.5 knots (21.3 km/h; 13.2 mph) (submerged)
Range	2,500 nmi (4,600 km; 2,900 mi) at 10 knots (19 km/h; 12 mph) (surfaced) 100 nmi (190 km; 120 mi) at 5 knots (9.3 km/h; 5.8 mph) (submerged)
Complement	34 crew
Armament	2 × internal bow 450 mm (17.7 in) torpedo tubes 2 × external bow 450 mm torpedo tubes 2 × external stern 450 mm torpedo tubes 4 × single external 450 mm rotating torpedo launchers 1 × single 75 mm (3 in) deck gun (Daphné only)