Napier engines have seen many uses on Land, Sea and in the Air. The Trust has always treated such Napier applications in this fashion.
This section deals specifically with Napier engines which have seen use in other people's products. This differentiation was made because, as with other manufacturer's designs, Napier engines saw use in multiple applications. The Lion engine saw massive use in the air however it was used in marine applications as well as in numerous world record attempts in cars and boats as well as aircraft! Similarly the Deltic was initially designed as a marine engine however it saw use in the world famous Deltic railway locomotives. They were also used as generators for the Diplomatic Wireless Service as well as being fitted in the unique record breaking FDNY "SuperPumper".