3390 viewsAround the year 1903, the Admiralty ordered two engines, each of 160 BHP at 400 r.p.m. for installation in the battleship HMS Dreadnought.
3206 viewsDuring 1906, the Admiralty specification required lightweight diesel engines for the propulsion of pinnaces and Mirrlees designed a four cylinder unit of 120 BHP at 400 r.p.m. These engines had bed plates of aluminium and columns of manganese bronze. The piston diameter was 9 and three quarter inches with a stroke of 12 inches.