The French submarine Rubis was a notable vessel of the Émeraude class, built for the French Navy during the early 20th century. Constructed at the Arsenal de Cherbourg, she was laid down in October 1903, launched on June 27, 1907, and officially commissioned on December 11, 1909. As part of the six vessels in her class, Rubis embodied the French naval strategy of the time, emphasizing underwater endurance and offensive capability. Rubis had a displacement of 395 metric tons when surfaced and 427 metric tons submerged, reflecting her relatively compact size typical of early 20th-century submarines. Her overall length was 44.9 meters, with a beam of 3.9 meters and a draft of 3.8 meters. She was designed with a single-hull configuration under the Maugas design principles, optimized for operational depth of up to 40 meters. Her propulsion system consisted of two Sautter-Harlé diesel engines, each producing 300 metric horsepower, which powered her on the surface, allowing a maximum speed of approximately 11.26 knots. When submerged, her propulsion shifted to electric motors of equal power, enabling her to reach speeds of 8.5 knots. Her operational range was notable for her time, with a surfaced endurance of 2,000 nautical miles at 7.3 knots and a submerged endurance of 100 nautical miles at 5 knots, making her capable of extended patrols. Armament included four internal 450-millimeter torpedo tubes—two at the bow and two at the stern—carrying a total of six torpedoes. Her crew comprised 2 officers and 23 enlisted men, reflecting her role as a relatively small but capable attack submarine. Rubis’s service history marked her as an early example of French submarine design, contributing to France’s evolving undersea warfare tactics. Her construction and operational profile exemplify the technological advancements and strategic priorities of the French Navy in the pre-World War I era, highlighting her significance in maritime military development.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.