Dynamics study of proof jigging ship due to changes in hull geometry

Abstract

Abstract Speedboats that serve the Bengkalis-Pekanbaru route continue to suffer losses because there are no passengers, so they have to stop operations. For this reason, development is carried out by changing the function of ships from passenger ships to cargo ships by modifying several ship hull geometries. changes made to the hull changed some dimensions and ratios of the ship. Dynamics study due to changes in the main size of the vessel uses seakeeper numerical simulation. The evaluated hull model has a size of 19.7 meters, width of 3.6 meters, height of 2.21 meters and draft of 1, 135 meters. With a computer-based method to evaluate the motion of the ship, Evaluation results from hull model at 0 knots speed maximum RAO heave is in heading 90 degree with an amplitude of 1, 206 m, RAO roll motion is heading 90 degree with an amplitude of 6.642 degree and RAO pitch motion heading 0 degree with an amplitude of 1.203 degree. At speed 20 knots the maximum RAO heave motion is heading 180 degree with an amplitude of 2.058 m, RAO roll is heading 90 degree with an amplitude of 6.684 degree and RAO pitch motion is heading 0 degree with an amplitude of 1.884 degree.