Fixed Pitch Transverse Propeller and bow thruster

Description

A bow thruster or stern thruster is a tansversal propulsion device built into,or mounted to,either the bow or stern,of a ship or boat,to make it more maneuvrable.Bow thrusters make docking easier,since they allow the captain to turn the vessel to port or starboard side,wihtout using the main propulsion mechnism which requires some forward mothion for turning.
Lori provides bow thruster with contra-rotaing propellers as well,which using contra-rotating technology in the bow thruster will realize the shortest propeller diameter among the same power thruster.Bow thruster has the strongest propulsive force among nomal thruster with the same diamterr.At the same time,propulsive force on the left side is about same to the right side.