Amphitrite-class submarine

A colorized postcard of Andromaque
Class overview
NameAmphitrite
Operators French Navy
Preceded byGustave Zédé class
Succeeded byBellone class
Built1913–18
In service1915–35
Completed8
Lost1
Scrapped7
General characteristics (as built)
TypeSubmarine
Displacement
  • 418 t (411 long tons) (surfaced)
  • 614 t (604 long tons) (submerged)
Length54 m (177 ft 2 in) (p/p)
Beam5.41 m (17 ft 9 in) (deep)
Draft3.46 m (11 ft 4 in)
Installed power
Propulsion2 shafts
Speed
  • 12–13 knots (22–24 km/h; 14–15 mph) (surfaced)
  • 9.5 knots (17.6 km/h; 10.9 mph) (submerged)
Range
  • 785 nmi (1,454 km; 903 mi) at 13 knots (24 km/h; 15 mph) (surfaced)
  • 100 nmi (190 km; 120 mi) at 5 knots (9.3 km/h; 5.8 mph) (submerged)
Complement27
Armament

The Amphitrite class consisted of eight submarines built for the French Navy just before World War I and completed during the war. The diesel engines of these boats were very unreliable and partially accounted for their lengthy building times. Two of the submarines, Amarante and Astrée, were converted into minelayers before completion.