Mesin diesel merupakan mesin yang paling banyak digunakan sebagai sumber energi mekanisdiatas kapal. Mesin diesel adalah salah satu mesin pembakaran dalam yang menghasilkan energi gerak danenergi panas. Panas berlebihan pada mesin mengakibatkan kerusakan mesin. Untuk mencegah panas yangberlebihan pada mesin diesel maka diperlukan pendinginan yang tepat, salah satu komponen yang bertugassebagai pendingin mesin adalah fresh water cooler (FWC) berupa heat exchager. Gagalnya FWC untukmendinginkan air tawar sebagai media pendingin mesin mengakibatkan kerusakan mesin. Perawatan FWCmerupakan tindakan untuk mengembalikan kemampuan FWC pada kondisi yang prima untuk mendinginkanfresh water dan mencegah terjadinya kegagalan mesin akibat temperatur mesin yang melebihi batas yangditentukan. Adapun tujuan penelitian ini adalah untuk mengetahui bagaimana tindakan perawatan yangdilakukan pada FWC sistem pendinginan mesin diesel penggerak generator listrik menggunakan metode studikasus yang pada kapal navigasi, hasil penelitian dipaparkan secara diskriptif. Kesimpulan penelitian iniperawatan FWC pada kapal navigasi sudah berjalan dengan baik, dilaksanakan sesuai instruksi kerja petunjukmesin, sesuai jadwal, hasil perawatan didapat temperatur mesin kembali sesuai dengan yang diharapkan.
Determining the maintenance strategy for fishing vessels propulsion engines can use engine operational monitoring data. This data is used to prepare the implementation time, spare parts, labor, and costs. Unfortunately, many fishing vessels do not have this data. Currently, electronic devices are available for monitoring machine operations. This device is cheap, easy to use, takes responsibility for various physical quantity parameters, displays it on LCD, stores it digitally, and transmits data wirelessly. This paper aims to review the application of engine operational monitoring tools to apply to fishing vessel propulsion engines. The material used is scientific articles consisting of journals and proceedings indexed by online databases. Several keywords are used to obtain scientific articles that are suitable for the study. The method used is a literature review that is systematically reviewed by applying inclusion and exclusion. The results obtained in this article are the parameters for monitoring propulsion engines, namely temperature, pressure, rotational speed, and hours the engine runs. The monitoring device requires sensors to detect physical parameters, a microcontroller to process data, an LCD to display monitoring results, and memory to store data to obtain this data. The device supports wireless communication via Bluetooth or WiFi radio signal. Fishing vessels are operating in offshore areas that are not covered by internet networks as IoT communication transmissions. Further research on how to transmit operational engine data from offshore to onshore without an internet signal so that data can be accessed using the internet network.
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