Émeraude-class submarine (1906)

The Émeraude-class submarines consisted of six submarines built for the French Navy () during the first decade of the 20th century. One boat was sunk and another captured during the First World War and the survivors were scrapped after the war.

Design and description The Émeraude class were built as part of the French Navy's 1903 building program to a Maugas single-hull design. The submarines displaced surfaced and submerged. They had an overall length of , a beam of , and a draft of . They had an operational diving depth of . Their crew numbered 2 officers and 23 enlisted men.Garier 1998, pp. 12–13, 23

For surface running, the boats were powered by two Sautter-Harlé diesel engines, each driving one propeller shaft. When submerged each propeller was driven by a 300-metric-horsepower electric motor. They could reach a maximum speed of on the surface and underwater. The Émeraude class had a surface endurance of at and a submerged endurance of at .Garier 1998, p. 18

The boats were armed with four internal torpedo tubes, two in the bow and two in the stern, for which they carried six torpedoes.Garier 1998, pp. 18–19 and were the first French submarines to be equipped with a deck gun when they were fitted with a single gun in August 1915.

Ships + Émeraude-class submarines Name Builder Laid downCouhat, p. 128 LaunchedGardiner & Gray, p. 208 CommissionedGarier 1998, p. 12 FateGarier 1998, p. 33 Arsenal de CherbourgOctober 1903 6 August 1906 11 November 1908 Sold for scrap, 27 January 1923 20 November 1906 19 December 1908 Sold for scrap, 10 May 1921 26 June 1907 11 December 1909 Arsenal de Toulon 6 February 1908 10 December 1910 Sunk by a naval mine, 15 January 1915 2 July 1908 Sold for scrap, 10 May 1921 3 August 1908 Damaged by Ottoman gunfire and beached on 30 October 1915. Re-floated and repaired by Ottoman forces; renamed Müstecip Onbaşı, but never commissioned. Returned to France and sold for scrap, 14 April 1920

Émeraude-class submarine (1906)

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