The Sirène class submarines were a sub-class of the 600 Series

French 600 Series submarines

The French 600 Series submarines were a series of submarine classes built for the French Navy during the Inter war years.-Development:...

 built for the French Navy

French Navy

The French Navy, officially the Marine nationale and often called La Royale is the maritime arm of the French military. It includes a full range of fighting vessels, from patrol boats to a nuclear powered aircraft carrier and 10 nuclear-powered submarines, four of which are capable of launching...

 prior to World War II

World War II

World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

.
There were four vessels in the class, built to a Loire-Simonot design
They were ordered in 1925 and completed by 1927.
The four boats of the Sirène class saw action during the Second World War, from September 1939 until the French armistice in June 1940.

General characteristics

The Sirène’s had a displacement

Displacement (ship)

A ship's displacement is its weight at any given time, generally expressed in metric tons or long tons. The term is often used to mean the ship's weight when it is loaded to its maximum capacity. A number of synonymous terms exist for this maximum weight, such as loaded displacement, full load...

 of 609 tons surfaced and 757 tons submerged. They had an endurance of 3,500 miles at 7.5 knots, with a maximum surface speed of 13.5 knots, and a submerged speed of 7.5 knots. Their armament was seven torpedo tube

Torpedo tube

A torpedo tube is a device for launching torpedoes. There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units installed aboard surface vessels...

s (3 forward, 2 midships, and 2 aft) with an outfit of 13 torpedoes. As with all French submarines of this period, the midships torpedo tubes were fitted externally in trainable mounts. They had a single 3 inch/76 mm and two 8 mm machine guns, and were manned by crews of 41 men.

Ships

, scuttled November 1942 Toulon

Toulon

Toulon is a town in southern France and a large military harbor on the Mediterranean coast, with a major French naval base. Located in the Provence-Alpes-Côte-d'Azur region, Toulon is the capital of the Var department in the former province of Provence....

; raised, sunk in air raid June 1944., scuttled November 1942 Toulon; raised, sunk in air raid twice; April 1943, November 1943., scuttled November 1942 Toulon; raised, sunk in air raid June 1944., decommissioned in 1938.