The Rolls-Royce Marine Spey is a marine gas turbine based on the Rolls-Royce Spey and TF41 aircraft turbofan engines.^[1] The Marine Spey currently powers seven ship classes including the Royal Navy's Type 23 frigates and provides a power output of 19.5 MW (about 26,150HP). The Marine Spey incorporates technology from the Tay and RB211.

Marine Spey
Marine Spey on display at the Rolls-Royce Heritage Trust, Derby
Type	Gas turbine
National origin	United Kingdom
Manufacturer	Rolls-Royce plc
First run	1960s
Developed from	Rolls-Royce Spey