Hunt-class mine countermeasures vessel
The Hunt class is a class of thirteen mine countermeasure vessels of the Royal Navy. As built, they combined the separate roles of the traditional minesweeper and that of the active minehunter in one hull, but later modifications saw the removal of mine-sweeping equipment. They have a secondary role as offshore patrol vessels.
HMS Quorn in 2001
Stern view of HMS Brocklesby off Bahrain in 2021
The Napier Deltic engine is a British opposed-piston valveless, supercharged uniflow scavenged, two-stroke diesel engine used in marine and locomotive applications, designed and produced by D. Napier & Son. Unusually, the cylinders were disposed in a three-bank triangle, with a crankshaft at each corner of the triangle.
The Deltic-powered Hunt-class mine countermeasures vessel HMS Ledbury
Napier Deltic powered British Rail Class 55 D9017 The Durham Light Infantry starting its engines at London King's Cross in 1966
Napier Deltic engine at the National Railway Museum, York