by running refrigeration,hydraulic pupm
Main engine is used for propulsion of ship.
Mainly on the main decking of the ship, but they can be trained to operate on the mast, sails and hull of the boat.
A ship may have several engines that do different jobs. These might include generating electricity, running refrigeration, producing hydraulic pressure or running pumps. The main engine on a ship is the engine used to drive the propellers. Sometimes a ship may have more than one propulsive engine but it would be called main engine number....
Maine engine(s) using for propulsion purpose.
The propulsion engine on a ship or aircraft is the MAIN engine. -Many aircraft and almost all ships have smaller engines just to produce electrical and hydraulic power.
If they operate the ship, they are the "ship's crew".
main part of a ship
Their main ship was the Mayflower.
Followings could be some reasons for raise in fuel consumption of a ship: 1- Bad quality fuel 2- faulty fuel pump/ fuel valves (main engine) 3- ship's bottom being dirty 4- faulty turbo charger (main engine) 5- blow by of the piston rings (main engine) 5- leaky inlet/exh. valves (main engine) 6- leakage in fuel system (pipping) 7- faulty fuel oil separator 8- Unprefect bunckering 9-.....etc.
Importance of watch engine of the ship?
The main purpose of the turbojet aircraft engine is to provide enough power to operate larger planes. These turbojets make lengthier flight travel possible.
Google search engine operate on nonprofit basic.