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All Journal Jurnal Locus Penelitian dan Pengabdian
Sidiqa, Anila Nur
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Aerospace Engineering Automotive Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Mathematics

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Navigating a Greener Horizon: Route Optimization of LNG Shipping Sidiqa, Anila Nur; Komarudin, Komarudin
Jurnal Locus Penelitian dan Pengabdian Vol. 4 No. 10 (2025): : JURNAL LOCUS: Penelitian dan Pengabdian
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/locus.v4i10.4920

Abstract

This research addresses a critical gap in maritime logistics optimization by developing the first comprehensive Capacitated Vehicle Routing Problem (CVRP) framework specifically designed for Japan's domestic Liquified Natural Gas (LNG) terminal distribution network. Despite Japan being the world's second-largest LNG consumer with 37 operational terminals, no prior academic research has systematically optimized inter-terminal routing within this strategically important market. The study develops solutions using Mixed Integer Linear Programming (MILP) and Clarke-Wright Savings Algorithm to minimize operational costs while incorporating Boil-Off Gas (BOG) losses as a novel constraint in maritime CVRP formulations. Through analysis of five vessel capacity configurations (125,000-180,000 m³) across eight representative Japanese terminals, this research demonstrates that 180,000 m³ vessels achieve optimal performance with 3-vessel fleet deployment and 80.2% average utilization. When operational consistency constraints require minimum 80% target utilization, the optimal configuration shifts to 170,000 m³ vessels, achieving 84.9% average utilization with significantly reduced variability (3.6% standard deviation versus 15.8% unconstrained). The research validates MILP optimality for medium-scale instances while establishing metaheuristic alternatives for larger operational deployments.
Co-Authors Komarudin Komarudin