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When the ship is deep enough, it is also possible to install a combination of a tube bow thruster and a control grid bow thruster.

When this type is used, water enters via one or two tubes. The water is pushed outside via a 360°-revolving control grid, using a horizontal propeller.

This system can also be used for emergency propeller. In sea ships, this bow thruster is used to keep a ship in position, via a connection to a DP system.