Design of a Water Jet Using a Robin Engine as the Propulsion System for a 1 GT Boat

Abstract

The ship propulsion system functions to generate thrust that moves the vessel through the water. The water jet system is a type of propulsion that operates by drawing water from beneath the hull and expelling it through a nozzle, thereby producing thrust for the boat. The water jet design for a 1 GT boat consists of an intake body, nozzle, and a three-blade impeller with a diameter of 4 inches. The purpose of this design is to determine the performance of the water jet on a 1 GT boat. Based on direct testing, the boat achieved a speed of approximately 4–5 knots. The results of this test can serve as a basis for the application of the water jet system as an alternative propulsion method, particularly for 1 GT fishing boats operating in coastal waters.