The smooth operation of the ship is inseparable from the support of auxiliary aircraft with good work and maintenance systems. The compressor as a producer of compressed air which will be used for the initial ignition of the main engine, and auxiliary engines as well as working air services in the engine section and the deck section. Thus, maintenance needs to be carried out so that the required air capacity can be fulfilled at any time. For the smooth operation of the machine, good maintenance management is needed so that its condition is maintained and when it is used there are no problems and it can work optimally. Many experts say that how important it is to make a good maintenance management. The method used in this research is the field research method supported by conducting interviews with several parties related to the research topic and supported by library research methods. To carry out maintenance and repairs to the air compressor on the main engine at KM Umsini, it is necessary to carry out maintenance and repair management which includes planning, organizing, implementing and finally controlling. The suggestion that the author can convey is that the ship's crew, especially the engineers, learn correctly the workings or functions of the air compressor on the main engine so that when the ship is operating it experiences problems that can be resolved properly.

This study focuses on the management of gear pump maintenance on KM Kelimutu ship. Data collection methods are used to identify and investigate the causes of damage that occur in the gear pump. The required maintenance and repair actions are determined based on the analysis results. The process of managing maintenance involves several important steps. First, planning is carried out to determine the planned maintenance actions. Subsequently, organization is conducted by appointing responsible personnel and coordinating with relevant parties to minimize disruptions to the maintenance of equipment and other machinery on the ship. Furthermore, actuating involves efforts to ensure that all human resources work according to their tasks, functions, and competencies in order to achieve company goals. Finally, control is implemented through supervision of each job performed to identify and rectify any potential errors. The results of this study provide insights into the importance of gear pump maintenance and effective strategies in managing the maintenance process. By implementing the appropriate steps, it is expected to enhance the performance of the gear pump, extend its service life, and optimize operational efficiency in the industry.

Manajemen operasional sangat penting dan tidak boleh diabaikan dalam pembuatan kapal industri. Pengembangan dan pemodelan dalam manajemen risiko harus diterapkan untuk membuat pembangunan kapal lebih efisien dari segi waktu dan biaya. langkah pertama dalam risiko manajemen adalah konsep IIAR: (1) Identifikasi, adalah mengidentifikasi lokasi, waktu, penyebab, dan proses terjadinya risiko yang dapat menghalangi, menurunkan, menunda, atau meningkatkan tujuan bekerja di galangan kapal; (2) Inventarisasi data, melakukan pengumpulan data yang mendukung identifikasi segala risiko yang ada, mulai dari pengajuan draft dokumen dari pemilik sampai dengan pendirian kapal; (3) Analisis (assessment) adalah analisis risiko jadwal menggunakan pendekatan model matematis, analisis dilakukan dengan pengurangan risiko jadwal pada manajemen proyek, menggunakan database, menggunakan risiko biaya dan risiko jadwal dalam risiko analisis; dan (4) Hasil, adalah hasil yang diperoleh setelah melakukan penilaian risiko, rasio risiko, identifikasi peringkat risiko, dan pengendalian risiko termasuk mitigasi risiko