impeller-type log
1Pitometer log — Pitometer logs (also known as pit logs) are devices used to measure a ship s speed relative to the water. They are used on both surface ships and submarines. Data from the pitometer log is usually fed directly into the ship s navigation… …
2Rolls-Royce Merlin — Merlin The Rolls Royce Merlin …
3Supermarine Spitfire (early Merlin powered variants) — Infobox Aircraft name =Spitfire type =Fighter manufacturer =Supermarine caption =Spitfire Vc launching from USS Wasp designer =R. J. Mitchell first flight =5 March 1936 introduction =1938 retired =1955, RAF status = primary user =Royal Air Force… …
4Supermarine Spitfire operational history — November 1942 photo of a very early Mk IXb of 306 (Polish) Toruński Squadron. Main article: Supermarine Spitfire The Supermarine Spitfire, the only British fighter to be manufactured before, during and after the Second World War, was designed as… …
5Hawker Hurricane variants — The Hawker Hurricane was a British single seat fighter aircraft designed and predominantly built by Hawker Aircraft Ltd. Some versions were built in Canada by the Canada Car and Foundry Co Ltdflagicon|United Kingdom British VariantsHurricane Mk I …
