HMIS Kistna (U46) was a Black Swan-class sloop built by Yarrow (Shipbuilders) Limited, commissioned in 1943 under the 1940 Build Programme. As a member of the Black Swan class, she featured the typical design of these escort vessels, optimized for convoy protection and patrol duties during World War II, though specific physical dimensions are not provided in the source. During her wartime service, HMIS Kistna was initially deployed for convoy escort duties between the United Kingdom and West Africa. Notably, in November 1943, she participated in repelling a German attack while escorting a convoy to Liverpool. The convoy was targeted by Wolfpack Schill, with HMIS Kistna successfully helping to ward off German aircraft, including the attack that damaged the escort vessel HMS Chanticleer. During this period, she also faced threats from German aircraft employing Hs 293 glider bombs, which resulted in the sinking and damaging of merchant vessels. Subsequently, Kistna was transferred to the Eastern Fleet, where she continued convoy escort operations across the Persian Gulf, Bay of Bengal, and Indian Ocean. She played a supportive role in military campaigns in Burma, participating in key operations such as Operation Romulus in December 1944, aiding an advance down the Mayu peninsula. In January 1945, she supported amphibious landings on Ramree Island during Operation Matador, providing naval gunfire support alongside other Royal Indian Navy ships and Royal Navy vessels. In April 1945, after a refit in Bombay, Kistna was involved in the amphibious assault on Rangoon during Operation Dracula, contributing to the Allied efforts to retake Burma. Her duties extended to minesweeping in the Malacca Straits during Operation Collie in July 1945, and she prepared for Operation Zipper, aimed at recapturing Malaya, by conducting exercises in August. At the end of World War II, Kistna was present in Penang at the Japanese surrender. Following Indian independence, she was commissioned into the Indian Navy as INS Krisna, serving in the 12th Frigate Squadron and later as a training vessel. She was decommissioned in 1981 and subsequently scrapped. HMIS Kistna’s service highlights her role in convoy escort, amphibious operations, and minesweeping, marking her as a versatile vessel of significant maritime contribution during the war.

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