French frigate Amiral Charner

The main gun armament of the Commandant Rivière class consisted of three of the new French 100-millimetre (4 in) guns, with a single turret located forward and two turrets aft.[1][2] These water-cooled automatic dual-purpose guns could fire a 13.5-kilogram (30 lb) shell at an effective range of 12,000 metres (39,000 ft) against surface targets and 6,000 m (20,000 ft) against aircraft at a rate of 60 rounds per minute.[3] A quadruple 305 mm (12 in) anti-submarine mortar was fitted in 'B' position, aft of the forward gun and in front of the ship's superstructure,[1] capable of firing a 230 kg (510 lb) depth charge to 3,000 m (9,800 ft) or in the shore bombardment role, a 100 kg (220 lb) projectile to 6,000 m (20,000 ft).[4] Two triple torpedo tubes were fitted for anti-submarine torpedoes, while the ship's armament was completed by two 30 mm (1.2 in) Hotchkiss HS-30 cannon.[1] The ships had accommodation for an 80-man commando detachment with two fast landing boats, each capable of landing 25 personnel.[5]

Amiral Charner was laid down in November 1958 and launched on 12 March 1960 at Arsenal de Lorient in Lorient. The vessel was commissioned on 14 December 1962.

The frigate was sold to Uruguay in 1991 and given the new name Montevideo. The ship remained in service until 2008.[6] She was sold for scrap in 2016.[7]