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Marine propulsion is the mechanism or system used to generate thrust to move a watercraft through 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 internal combustion engine driving a propeller, or less frequently, in pump-jets, an ...
The Motorship is a shipping magazine published 11 times per year by Mercator Media, [1] a specialist maritime publisher based in Fareham in the United Kingdom. The magazine has an ABC audited and certified circulation. The November 2009 audited issue had an ABC certified average circulation of 7253, of which 62.2%, went to Europe, 24.2% to ...
Articles about marine propulsion. Subcategories. This category has the following 6 subcategories, out of 6 total. G. Gas turbine ships (1 P) H. Hydroflight (4 P) ...
Experiment was a horse-powered ferry boat.It was a 12-ton, three-masted boat drawing a few feet of water, about 100 feet (30.48 m) long by 20 feet (6.1 m) beam. [3]) in 1807 to 1810, depending on the source.
Combined steam and gas (COSAG) is a propulsion system for ships using a combination of steam turbines and gas turbines to power the shafts. Combined marine propulsion Combined diesel or gas (CODOG)
Principle of a CODAG system, with two speed diesel gearboxes. Combined diesel and gas (CODAG) is a type of propulsion system for ships that need a maximum speed that is considerably faster than their cruise speed, particularly warships like modern frigates or corvettes.
The CODLAD propulsion system is based on the use of electric motors directly connected to the axes (generally two) of the propellers. The electric motors are powered by diesel generators and to have higher speeds, as happens in CODAD propulsion systems, the higher power diesel engine is inserted which is disconnected from the transmission system to return to cruising speed.
The Kort nozzle is a shrouded propeller assembly for marine propulsion. The cross-section of the shroud has the form of a foil, and the shroud can offer hydrodynamic advantages over bare propellers, under certain conditions. Advantages are increased efficiency at lower speeds (<10 knots), better course stability and less vulnerability to debris.