The Landing Craft Mechanized (LCM) or Landing Craft Mechanical was a landing craft designed for carrying vehicles. They came to prominence during the Second World War when they were used to land troops or tanks during Allied amphibious assaults.
The Landing Craft Mechanical Mark I was an early British model, it was able to be slung under the davits of a liner or on a cargo ship boom with the result that it was limited to a 16 ton tank. The British LCM was conceived and tested in 1920 and was used from 1924 in exercises.William F Buckingham. D-Day the First 72 hours Tempus Publishing, Stroud. 2004