Analisis Pengoptimalan Pengoperasian dan Daya Watermaker Guna Memenuhi Kebutuhan Air Tawar di Kapal Arenui Cruise

Abstract

Freshwater supply plays a crucial role in supporting ship operations, particularly on cruise vessels where water consumption is relatively high. Onboard Arenui Cruise, freshwater is produced using a reverse osmosis (RO) watermaker system. Although the system is capable of supplying freshwater from seawater, its operation may lead to inefficient energy usage if not properly managed. This study aims to evaluate the operational performance of the watermaker system, focusing on freshwater production capacity, electrical power consumption, and energy efficiency, as well as to propose optimization measures for improved operation. The research was conducted using a descriptive analytical method with a case study approach, based on operational data collected over a six-day observation period onboard Arenui Cruise. The analyzed parameters include freshwater production volume, daily freshwater demand, electrical power usage, and specific energy consumption (SEC). The results show that the average freshwater production of 2.92 m³ per day is sufficient to meet the ship’s daily freshwater requirement of 1.9 m³ per day. However, the average SEC value of 40.67 kWh/m³ indicates that the watermaker system operates with relatively low energy efficiency. Based on these findings, several optimization strategies are proposed, including adjustments to operational practices, improved maintenance of key components, and the development of a standard operating procedure (SOP) for watermaker operation and maintenance. The implementation of these measures is expected to enhance energy efficiency and ensure a reliable freshwater supply onboard Arenui Cruise.