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Journal : International Journal of Marine Engineering Innovation and Research

Analysis of Sea Border Transportation in Indonesia, Case Study: Crossing Between Indonesia and Philippines (Bitung – Davao City) Danny Faturachman; Aldyn Clinton Partahi Oloan; Fridolini Fridolini
International Journal of Marine Engineering Innovation and Research Vol 6, No 4 (2021)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (269.311 KB) | DOI: 10.12962/j25481479.v6i4.10795

Abstract

Indonesia as an archipelagic country consists of thousands of islands and has a large sea area so that the required mode of transportation is sea transportation as a means of mobility and driving national economic development. In addition, Indonesian waters serve as a liaison between cities, as well as between countries. As a border on the island of Sulawesi, the city of Bitung is a link between Indonesia and the city of Davao City in the Philippines. For all of this, security for shipping, especially at the border, is needed to support the smooth delivery of goods by using Ferry Ro/Ro ships so that sea transportation activities in general and trade and economic activities between the two countries can run smoothly because maritime safety greatly affects the continuation of development efforts
The Analysis of Thrust and Efficiency of B – Series Propeller : Influence of Speed Variation Aldyn Clinton Partahi Oloan; Muswar Muslim; Ayom Buwono
International Journal of Marine Engineering Innovation and Research Vol 8, No 4 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i4.19435

Abstract

For variations in ship speed given data such as length perpendicular (LPP) 28 meters, propeller rotation (N) 290 rpm and shaft horse power (SHP) of 452.5 Hp by setting speed values varying from 4 knots to 9 knots, the average propeller efficiency for the B4-40 type is 60% while the average trust or thrust of the ship is 5873.5 kg and the average trust coefficient is 0.28. Likewise for the B4-55 type, the average propeller efficiency is around 58.6%, then the average thrust for the ship is 5736.3 kg and the thrust coefficient for the ship is 6.6.