Издательство: | Bookvika publishing |
Дата выхода: | август 2012 |
ISBN: | 978-5-5108-5245-5 |
Объём: | 94 страниц |
High Quality Content by WIKIPEDIA articles! 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 a motor or engine turning a propeller, or less frequently, in jet drives, an impeller. Marine engineering is the discipline concerned with the design of marine propulsion systems.