Bow thruster is used for drag no self-propelled ship or boat etc. It make the ship entering and leaving port or pier easer. Tugboat have a small hull but equipped with high-powered propulsion,assist big vessels out of port or pier,.
Bow thruster’s main function is to make the power and torque of the motor through the coupling and a pair of speed reducing circular arc bevel gears to the fixed propeller, control the rotation speed and direction of the variable-frequency motor through variable frequency speed regulation, and then make the propeller generate the thrust force towards the portside or the starboard. No matter the degree of thrust force can be adjusted or not, it can raise the mobility and maneuverability at ship navigation.