Leopard-class frigate
Although successful, improvements in traditional steam turbine technology erased the fuel economy advantage of the diesel powerplants and led to production being curtailed in favour of the Type 12 frigate, which was similar in overall design.They were envisioned in late World War II and immediately after as part of a 1945 project for anti-submarine, anti-aircraft, and Aircraft Direction frigates which would all share a common hull and propulsion, and the design of the Type 41 was completed by December 1947.[4] Like the 1950 RAN Battle-class variant (actually the Royal Navy variant, for war emergency production) and the unbuilt 1942 two-turret RN G destroyer, which the 1944 common hull escort closely resembles (shipyards building the Type 41, like Dennys Glasgow yard, had been provided with the full 1944 Gallant-class plans[5]), the Type 41 Leopard class used the latest twin semi-auto 4.5" Mk6 turrets.[4] The Leopard class was also fitted with an early type of hydraulic stabiliser system consisting of two fins that could be extended outside the main hull, to port and starboard, from a compartment between the two engine rooms.However, by 1955 success had been achieved, with difficulty and limitations, in developing new steam turbines giving 30-knot speed and the range to take convoys across the Atlantic, embodied in the Whitby-class Type 12 frigates.In service, the Leopard class were used mainly as patrol frigates, notably on the South American station, where their long range and destroyer-like appearance were particularly advantageous.[citation needed] Operating out of Simonstown naval base in South Africa,[8] they in part replaced the Dido-class cruisers HMS Euryalus and Cleopatra usually deployed on these duties during 1946–1954.
Royal NavyIndian NavyBangladesh Navyfrigatelong tonsdieselsType 965 AKE-1Cossor4.5 in guns Mark 640 mm Bofors gunSquid A/S mortaranti-aircraftfrigatesType 61steam turbineType 12 frigateanti-submarineType system of the Royal NavyWhitby-class Type 12 frigates40mm BoforsSeacatsurface to air missilesSimonstown naval baseHMS EuryalusCleopatraSverdlov-class cruiserBuenos Airesconfrontation with IndonesiaCod WarChathamFalklands WarSan Carlos WaterPennantHMS LeopardVickers Armstrong (Engineers) LtdPeter Brotherhood LimitedHMS LynxJohn Brown and Co LtdCrossley Brothers LtdBritish Polar Engines LtdBangladeshBNS Abu BakrHMS PumaScotts Shipbuilding and Engineering Co LtdHMS JaguarWm Denny Bros LtdBNS Ali HaiderINS BrahmaputraINS BeasINS BetwaColledge, J. J.Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal NavyLeopardPantherJaguarAbu BakrAli HaiderBrahmaputraSalisbury classRothesay classFrigates of the Indian NavyShivalik classShivalikSatpuraSahyadriTalwar classTalwar (F40)Trishul (F43)TarkashTrikandTushilBrahmaputra classBrahmaputra (1994)Betwa (F39)Beas (F37)River classHMIS NezaHMIS DhanushHMIS ShamsherHMIS KukriHMIS HooghlyHMIS TirBlackwood classKhukriKirpanKutharWhitby classBrahmaputra (1957)Beas (1958)Betwa (1959)Nilgiri classNilgiriHimgiriUdaygiriDunagiriVindhyagiriTaragiriLeander classKrishnaGodavari classGodavariGomatiAnchusa classHMIS ElphinstoneP classHMIS BaluchiHMIS PathanGrimsby classHMIS IndusAubrietia classHMIS CornwallisBlack Swan classHMIS NarbadaHMIS GodavariHMIS CauveryHMIS SutlejHMIS JumnaHMIS KistnaHastings classHMIS HindustanHMIS CliveHMIS LawrenceINS NilgiriINS UdaygiriINS TaragiriINS Mahendragiri