Motor ship

The supply ship MV American Tern during cargo operations at McMurdo Station in Antarctica in 2007

A motor ship or motor vessel is a ship that is propelled by an internal combustion engine, usually a diesel engine. The names of motor ships are often prefixed with MS, M/S, MV or M/V.

Engines for motorships were developed during the 1890s, and by the early 20th century, motorships began to cross the waters.