French submarine Thermidor

A postcard of sister ship Monge underway before 1915
History
France
NameThermidor
NamesakeThe second month of summer in the French Republican calendar
BuilderArsenal de Cherbourg
Laid down1906
Launched3 July 1909
Completed13 July 1910
Stricken12 November 1919
IdentificationPennant number: Q57
FateScrapped
General characteristics (as built)
TypeSubmarine
Displacement
  • 396 t (390 long tons) (surfaced)
  • 551 t (542 long tons) (submerged)
Length52.15 m (171 ft 1 in) (o/a)
Beam5.42 m (17 ft 9 in)
Installed power
Propulsion
Speed
  • 12 knots (22 km/h; 14 mph) (surfaced)
  • 8 knots (15 km/h; 9.2 mph) (submerged)
Range
  • 1,000 nmi (1,900 km; 1,200 mi) at 8.5 knots (15.7 km/h; 9.8 mph) (surfaced)
  • 27 nmi (50 km; 31 mi) at 5 knots (9.3 km/h; 5.8 mph) (submerged)
Complement2 officers and 23 crewmen
Armament6 × external 450 mm (17.7 in) torpedo launchers (4 × fixed, 2 × Drzewiecki drop collars)

Thermidor was one of 18 Pluviôse-class submarines built for the French Navy (Marine Nationale) in the first decade of the 20th century.