How the Napier Deltic engine fixed a serious problem for the navy's fast patrol boats
Napier Deltic Engine - YouTube
мεcнαηιcαl εηgιηεεяs • - The Napier Deltic engine is a British opposed-piston valveless, superchargeduniflow scavenged, two-stroke Diesel engine used in marine and locomotive applications, designed and produced by Napier & Son (