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Development trend of side thruster
Aug 23, 2018

Propeller thrusters with side thrusters are usually placed in the guide barrels across the hull so that they can be protected by the hull and are more safe and reliable. However, due to the strong flow in the guide tube, the friction loss is large and the power efficiency is reduced. If the propeller is extended out of the hull, its flow resistance is small, its dynamic efficiency can be improved, but it is easy to be damaged by collision. Therefore, in some special work ships, a form of retractable is often adopted. The retractable side pushing device is often used for submarine laying vessels. When it works in the deep water area, the side thruster extends to the hull to work; the thrust efficiency is higher: when it works in the shallow water area, the thruster receives the guide tube to work.

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