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The Lawspeaker
11-05-2018, 11:31 AM
https://www.youtube.com/watch?v=viDSl-PzfUY


Marine propulsion is the mechanism or system used to generate thrust to move a ship or boat across water. While paddles and sails are still used on some smaller boats, most modern ships are propelled by mechanical systems consisting of an electric motor or engine turning a propeller, or less frequently, in pump-jets, an impeller. Marine engineering is the discipline concerned with the engineering design process of marine propulsion systems.

Thanas Django
11-05-2018, 11:37 AM
Nonsense,

Allah invented everything and Mohammed was his messenger.