Rigault de Genouilly was the lead ship of the  of unprotected cruisers built for the French Navy in the 1870s. The ships were intended to fill multiple roles, including as scouts for the French fleet, and to patrol the French colonial empire; as such, they were given a high top speed of  and were optimized to use their sailing rig for long voyages abroad. They were armed with a main battery of eight  guns.

Design

The two ships of the  were ordered under the auspices of the naval plan of 1872, which was laid out to modernize the French Navy in the aftermath of the Franco-Prussian War of 1870–1871. The plan called for large numbers of cruisers of three different sizes: first-, second-, and third-class cruisers, the bulk of which were to be smaller and cheaper second- and third-class vessels. The third-class unprotected cruisers were to fulfill multiple functions, including fleet scouts in home waters and as patrol vessels for the French colonial empire abroad. These new ships required high speed and good sailing qualities, though a powerful armament was not needed. The design for the ships was drawn up by Arthur Bienaymé in 1872–1873.

Rigault de Genouilly was  long at the waterline, with a beam of  and an average draft of . She displaced  as designed. The ship had a ram bow and an overhanging stern. Her crew amounted to 195 officers and enlisted men. The ship's propulsion system consisted of a single compound steam engine driving a screw propeller. Steam was provided by six coal-burning fire-tube boilers that were ducted into a single funnel placed amidships. Her machinery was rated to produce  for a top speed of . At a more economical speed of , the ship could steam for . She had a full ship rig to supplement her steam engine on long voyages overseas.

The ship was armed with a main battery of eight  M1870M 21.3-caliber guns. One was placed atop the forecastle as a chase gun, one was on the stern, and the remainder were placed in an amidships battery on the upper deck, three guns per broadside. A pair of  Hotchkiss revolver cannon provided close-range defense against torpedo boats. She also carried four  bronze cannon that could be sent ashore with a landing party or used to arm the ship's boats.

Modifications
Rigault de Genouilly received a series of alterations throughout her career. In 1883, three more 37 mm Hotchkiss guns were installed. She underwent a more significant modification in 1886–1889. Three more 37 mm gun were added, bringing the total to eight. She also received eight Belleville boilers of the water-tube type. A new, larger funnel was installed in place of the original funnel. By 1897, she also had one  gun installed. At some point during her career, her rigging was reduced to a barque plan.

Service history
Rigault de Genouilly was laid down at the Arsenal de Brest shipyard in Brest, France, on 31 July 1873. She was launched on 19 September 1876, and was commissioned to begin sea trials on 15 June 1878. These were completed in early November, and on the 8th she was reduced to the 3rd category of reserve at  Brest. She was then decommissioned on 1 December. On 10 March 1882, she was recommissioned for a deployment to the Antilles. By 1884, Rigault de Genouilly had been transferred to the Levant station. As the tensions between France and Qing China over the former's intervention in Vietnam during the Tonkin campaign escalated into the Sino-French War in mid-1884, the French began sending forces to strengthen their position in East Asia. In October that year, Rigault de Genouilly arrived in the region. By then, the Far East Squadron, commanded by Rear Admiral Amédée Courbet, that time, also included the ironclad warships  (the flagship) and , the unprotected cruisers , , , , , and , and the gunboat . While at Keelung in November, the ship suffered a boiler explosion that killed thirteen men.

Rigault de Genouilly joined the blockade of Formosa; the cruisers committed to the blockade included her sister , and Villars, Champlain, , and D'Estaing. The ships were based at Tainan, toward the southern end of the island. In March, Courbet sent Rigault de Genouilly, Nielly, Champlain, Lapérouse, and the gunboat  to blockade the mouth of the Yangtze river on mainland China. The French blockade effort, which included other ports, proved to be effective at interrupting the movement of rice crops from southern China north. By this time, secret negotiations between French and Chinese representatives had already begun, as both countries were losing patience with the costly war, and in April, an agreement was reached that was formally signed on 9 June, ending the war. After the war, as the French began to draw down their naval forces in East Asia, Rigault de Genouilly was detached to return to the Levant station. She cruised in the eastern Mediterranean from 1885 into 1886.

The ship was taken out of service later in 1886 for a reconstruction of her propulsion system; work lasted into 1889. The following year, Rigault de Genouilly was stationed at Brest, along with the protected cruiser  and the unprotected cruiser . The three cruisers were mobilized on 20 June to take part in the fleet maneuvers held that year. Rigault de Genouilly was assigned to the 4th Division of the 2nd Squadron of the Mediterranean Fleet, along with the ironclads , , and . The ships concentrated off Oran, French Algeria on 22 June and then proceeded to Brest, arriving there on 2 July for combined operations with the ships of the Northern Squadron. The exercises began four days later and concluded on 25 July, and during part of the maneuvers, Rigault de Genouilly and Primauguet represented the hostile fleet. In 1891, the ship was assigned to the Flying Division of the Atlantic.

By 1893, Rigault de Genouilly had joined the Atlantic squadron, which also included the cruisers  and Nielly. In September, the three ships visited Boston in the United States. The three ships continued to cruise together the following year. On 25 March 1895, the ship was renamed Amiral Rigault de Genouilly. In 1897, she replaced the cruiser  on the North American station, serving alongside the cruiser , the station flagship. The ship was present in Santiago de Cuba in May 1898 during the Spanish-American War, when the city's coastal defenses were bombarded by a squadron of United States ships; errant American fire fell into the harbor, and Amiral Rigault de Genouilly was struck in her rigging and her funnel. The ship's service on the Atlantic station came to an end in early 1899, when Sfax arrived to take her place in the unit. By that time, Amiral Rigault de Genouilly had been cruising in the West Indies. She was struck from the naval register on 3 February 1899 and was renamed Rumengol later that year. She was then converted into a coal storage hulk and used at Brest into 1914. She was condemned on 16 June 1914 but lay at Landévennec during World War I; after the United States entered the war in 1917, she was used as a depot ship for the US naval forces stationed at Brest. According to French naval records, she was sold on 14 June 1919, but records listing her for sale at Brest existed as late as 1922.

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References
 
 
 
 
 
 
 
 
 
 
 
 
 

Rigault de Genouilly-class cruisers
Ships built in France
1876 ships