Uji Performa Penggerak Perahu Dengan Tipe Twin Menggunakan Propeller 2 Blade

Abstract

Indonesia, as an archipelagic country, requires
efficient sea transportation systems, particularly for
small to medium-sized fishing vessels. One innovation
developed to support this need is the twin propulsion
system driven by a single engine. This study aims to
evaluate the performance of a 2-blade propeller in a
twin screw configuration, focusing on thrust, speed,
efficiency, and vessel stability. The experimental
method was conducted through direct testing in a
water tank using a 22 HP four-stroke gasoline engine,
which transmitted power to two propeller shafts via a
chain and sprocket mechanism. The results show that
thrust increases with engine speed. At 2300 RPM, the
average thrust obtained was 39.24 N, while at 4600
RPM, it significantly increased to 78.48 N. These
findings confirm a linear relationship between RPM
increment and thrust production. Overall, the twin
propulsion system with a 2-blade propeller
demonstrated good performance, stability, and
responsiveness to engine speed variations. This study
is expected to serve as a reference for the development
of propulsion systems for fishing boats and small
vessels that are more efficient and well-suited to the
conditions of Indonesia’s archipelagic waters,
particularly in the Bangka Belitung region.