Rolls-Royce Merlin exhaust flow and waste-gates, meant that this option was rejected in favour of the two-stage supercharger. Fitted with the two-stage two-speed supercharger, the Merlin 60 series gained 300 horsepower (224 kW) at over the Merlin 45 series, at which altitude a Spitfire IX was nearly faster than a Spitfire V. The two-stage Merlin family was extended in 1943 with the Merlin 66 which had its supercharger geared for increased power ratings at low altitudes, and the Merlin 70 series that were designed to deliver increased power at high altitudes. While the design of the two-stage supercharger forged ahead, Rolls-Royce also
Rolls-Royce MT30 engine contract to the MT30 for its Littoral combat ship design. In 2012 the company repackaged the MT30 so that it would fit into smaller ships, and their first such order came from South Korea, for their Daegu-class frigates. Rolls-Royce MT30 The Rolls-Royce MT30 (Marine Turbine) is a marine gas turbine engine based on Rolls-Royce Trent 800 aero engine. The MT30 retains 80% commonality with the Trent 800, the engine for the Boeing 777. The maximum power rating is 40 MW and minimum efficient power 25MW. Rolls-Royce announced the MT30 programming on September 11, 2001. The first run of the