midnight on 9 December 1941, HMS Glasgow sank the RIN patrol vessel with two lighters in tow en route to Karachi, with 6-inch shells at . Prabhavati was alongside the lighters and was mistaken for a surfaced Japanese submarine. was sunk by a Japanese aircraft during the Burma Campaign on 6 April 1942. Royal Indian Naval successes was ordered in 1939, and built by William Denny and Brothers. She was commissioned in 1941, and with World War II underway, was immediately deployed as a convoy escort. Jumna served as an anti-aircraft escort during the Java Sea campaign in early 1942, and was involved in intensive anti-aircraft action against attacking Japanese twin-engined level bombers and dive bombers, claiming five aircraft downed from 24–28 February 1942. In June 1942, was involved in the defence of Sydney Harbour during the attack on Sydney Harbour. On 11 November 1942, Bengal was escorting the Dutch tanker to the southwest of Cocos Islands in the Indian Ocean. Two Japanese commerce raiders armed with six-inch guns attacked Ondina. Bengal fired her single four-inch gun and Ondina fired her 102 mm and both scored hits on , which shortly blew up and sank. On 12 February 1944, the was depth charged and sunk east-south-east off Visakhapatnam, India by the Indian sloop and the Australian minesweepers and . Ro-110 had attacked convoy JC-36 (Colombo-Calcutta) and torpedoed and damaged the British merchant Asphalion (6,274 GRT). On 12 August 1944, the was sunk near the Seychelles, in position 03º35'S, 52º49'E, by depth charges from and the British frigate HMS Findhorn. Mutiny of 1946 In February 1946, Indian sailors launched the Royal Indian Navy Mutiny on board more than fifty ships and in shore establishments, protesting about issues such as the slow rate of demobilization and discrimination in the Navy. The mutiny found widespread support and spread all over India, including elements in the Army and the Air Force. A total of seventy-eight ships, twenty shore establishments and 20,000 sailors were involved in this mutiny. Transition to Independence and Partition On 1 March 1947, the designation of "Flag Officer Commanding, Royal Indian Navy" was replaced with that of "Commander-in-Chief, Royal Indian Navy." On 21 July 1947, H.M.S. Choudhry and Bhaskar Sadashiv Soman, both of whom would eventually command the Pakistani and Indian Navies, respectively, became the first Indian RIN officers to attain the acting rank of captain. Following India's independence in 1947