assigned to the Force d'action navale (FAR, "Naval Action Force"). One of the BCRs (Var, Marne and Somme) is assigned to Indian Ocean as flagship of the French naval forces in the region. In October 2009, Somme repelled an attack by Somali pirates. Royal Australian Navy The Royal Australian Navy (RAN) ordered one vessel, HMAS Success, of a modified design in September 1979. A second vessel was planned in 1980, but not optioned. Construction of Success was slow and costs increased. The modified Durance-class oiler is in length, with a beam of , and a draught of , with a full load displacement of . Propulsion machinery consisted of two SEMT-Pielstick 16 PC2.5 V 400 diesel motors, which supplied to the ship's two propeller shafts. Top speed was , and the ship had a range of at . Success had a total capacity of 10,200 tonnes of cargo: 8,707 tonnes of diesel fuel, 975 tonnes of aviation fuel, 250 tonnes of munitions (including guided missiles and torpedoes), 116 tonnes of water, 95 tonnes of components and naval stores, and 57 tonnes of food and other consumables. Fuel and liquid stores could be transferred from four points (two on each side), allowing Success to replenish two ships simultaneously, while solid cargo could be moved via vertical replenishment (with a hangar and helipad for a single Sea King, Seahawk, or Squirrel helicopter), or by boat (the RAN LCVP T 7 was carried on a starboard forward davit). The ship was armed with seven 12.7 mm machine guns, and was fitted for but not with a Mark 15 Phalanx CIWS. The sensor suite includes two Kelvin Hughes Type 100G navigation radars. Ship's company was made up of 25 officers and 212 sailors. Ships in class Argentine Navy On 12 July 1999, Argentina acquired Durance from the French Navy (originally commissioned into French service in 1976) and renamed the ship ARA Patagonia. The ship underwent a refit and has capacity for of fuel oil, 500 t of aviation fuel, 140 t of distilled water, 170 t of provisions, 150 t of munitions and 50 t of spare parts. The ship mounts only two Bofors 40 mm/60 guns and four 12.7 mm machine guns. The ship uses an Alouette III helicopter. The ship entered Argentine Navy service in July 2000. The ship was reported non-operational in 2020. In October 2022, it was reported that the