<![CDATA[An important aspect that needs to be considered in an effort to reduce the use of fuel on a ship is the planning of the ship's propulsion components (propulsor). The propulsion of traditional fishing boats in the Mayangan Probolinggo area is usually based only on market readiness and compatibility with the boat shaft used, without regard to the drag and thrust factors produced by the boat. So it is suspected that there are many deficiencies, especially in terms of thru). Efforts to increase the thrust of the ship can be done by installing a tool in the form of a cort nozzle called an Energy Saving Device (ESD) on the propeller. In this research, we will examine the selection of the Kort nozzle and analyze the model in order to obtain the shape of the Kort nozzle which can increase thrust on purse seine fishing vessels with variations in selecting the type of Kort nozzle using the Kort nozzle Shuskin type B, Shushkin type C and Kort nozzle. type 37. Analysis was carried out by simulation method using Computational Fluid Dynamic (CFD) software. The simulation results of fluid dynamic (fluent) computing software show that each model of the ship with the cort nozzle being analyzed experiences an increase in thrust from the application of the cort nozzle. The highest thrust value occurred on ships with Kort nozzle 37 of 8.1468 kN, while for ships with Kort nozzle Shuskin type B of 8.0102 kN. For the lowest thrust value on a ship with a Shuskin nozzle cort type C with a value of 7.8741 kN. So it was concluded that from several variations of the ship found on the ship model with a nozzle 37, the most optimal thrust was obtained. because the thrust force increased 16.1%.]]>
