Waterjet propelled crafts can perform complex movements by controlling multiple operating parameters of several waterjets simultaneously. In addition, it’s difficult to manoeuvre the crafts to complete complex movements through the helm and engine handle. However, developing single joystick vector control device may reduce the difficulty of ship maneuvering and achieve good control effect. Based on Sequence Quadratic Program (SQP) algorithm, the single joystick vector control algorithm of waterjet propelled crafts is studied in this paper. By solving how to obtain six operating parameters of two waterjets from three data (surge thrust, sway thrust and yaw moment), the maneuvering of waterjet-propelled crafts can be realized by the simple operation of a joystick. Moreover, this algorithm can provide a theoretical basis for joystick vector control device used in waterjet propelled crafts.
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