<![CDATA[High performance of ship propulsion is the designers main goal to reduce CO2 gas emissions authorized by the International Maritime Organization (IMO) through the Energy Efficiency Design Index (EEDI) standard. Several steps have been taken to improve efficiency and reduce emissions, among others, by selecting a more efficient propeller. One factor affecting propeller efficiency is its pitch distribution. This study determines propeller efficiency numerically from a constant-pitch propeller and three variable-pitch propellers through self-propulsion tests with disc actuator modeling using Numeca Computational Fluid Dynamics (CFD) software. The validation of the simulation program uses open water tests from B6.40 Wageningen and resistance model tests. The results of the self-propulsion test obtain the thrust coefficient (KT), torque coefficient (KQ), advance coefficient (J) and planned propeller rotation (rps), which are used to determine the propulsion coefficient (PC) and delivered horse power (DHP). The best PC is obtained in the variable-pitch B6.40 modification 3 by ± 4% more than the constant-pitch type.]]>
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