Maneuvering Capability Simulation and Analysis for Twin Waterjet-propelled Vessel

Planning craft adopts two pumps as underwater power to push the system, which is placed in the stern of the ship body both sides respectively. The thrust and torque of the pump and the split duct deflector were analyzed under different working conditions, and on the basis of MMG, the mathematical model of waterjet maneuver motion of twin waterjet-propulsion units was built and the performance was simulated. The result show that the steering device can be applied as a controller aboard to maneuver ship, to propel the ship both in ahead and astern conditions, and to put the ship turn in its position and move transversely, and this propulsion device has excellent maneuvering performance.