SHIP PROPULSIONShip (Marine) propulsionMechanism used to move a ship across water (engine turning a propeller)hoice o! a suita"le powerplant depends on#$si%e o! the ship $speed (t&pe o! cargo)$length' duration o! vo&age$cost (operational e(penses)$!uel Steam )ur"ineMarine steam tur"ine was developed "& Sir harles *lgernon ParsonsLow noise' low weight' low maintenance costs' more space o"tained (power +weight ratio raised),U) higher !uel consumptionSteam )ur"ineMost new-"uild ships with steam tur"ines are specialist vessels such as nuclear-powered vessels' and certain merchant vessels (LN.' coal carriers) where cargo can "e used as "un/er !uel0