Experimental Study on Maneuverability of The Cruise on the Han River with High-Lift Rudder with Wedge Tail

The high-lift rudder is essential to improve the maneuvering performance of the ship. A high-lift rudder with a wedge tail has been proposed in earlier research; at large rudder angles, the lift force increases dramatically, whereas at small rudder angles, the drag increases slightly. In this study, the free running model test is carried out on the open water pool. The model of the cruise on the Han River with a 1.5 m length is tested on the turning circle test with the three different types of rudders namely the flat plate, NACA0015 conventional, and NACA 0015 with a wedge tail. The turning circle test is performed, and test results are obtained in terms of including advances, and tactical diameter. The comparison results show the cruise with NACA 0015 with wedge tail gives better maneuvering performance by reducing advance and tactical diameter for the turning port and starboard, respectively.