Jurnal Maritim Polimarin 2022-06-28T12:00:42+00:00 PPPM Politeknik Maritim Negeri Indonesia Open Journal Systems <p><strong>Jurnal Maritim Polimarin</strong></p> <ul> <li><strong>E-ISSN : <a href=";1472626682&amp;1&amp;&amp;" target="_blank" rel="noopener">2540-9158</a> </strong></li> <li><strong>DOI: <a href="" target="_blank" rel="noopener">10.52492/jmp</a></strong></li> <li><strong>URL : <a href=""></a></strong></li> </ul> <p>PPPM Politeknik Maritim Negeri Indonesia</p> Studi Kinerja Hydrophore Tank Di Atas Kapal Dengan Variasi Tekanan Kerja dan Perbandingan Volume Air Dengan Udara 2022-05-26T02:48:53+00:00 Susanto Susanto Agil Putra Jaya Bondan Krisna Setiyawan <p>The use of a pressure tank with a hydrophore tank that serves to temporarily store water, with the principle of providing air pressure on the upper surface of the water in the tank. Working pressure on hydrophore operation is a very important parameter for maximum operation. Problems that often occur in hydrophore tanks are usually from the supply pump, water level in the tank, air pressure, and pressure sensors. Problems caused by pumps include pump leaks, the presence of air in the water flow. As a result, the freshwater pump for supply to the hydrophore tank is often On-Off with a very fast time duration. This research was conducted to find the right setting to maintain stable operating pressure on the hydrophore tank. The research was conducted directly on board the MV. NORDTIGER with a case study of direct problems that occur in the freshwater distribution system on board. The variables at the time of data collection were the working pressure of the hydrophore tank pressure and the water level in the tank. The operating load used in data collection is the condition of ordinary load and full load. The results of the study on the performance of the hydrohore tank by varying the water-air level, working pressure range and final loading. The shortest duration of filling time is at 50%:50% volume level composition at a pressure of 5-7 bar, while the longest filling time is at 70%:30% water-air volume level at a pressure of 3-7 bar.</p> 2022-06-28T00:00:00+00:00 Copyright (c) 2022 Jurnal Maritim Polimarin Beban Lebih Elektro Motor Pompa Ejektor Pada Fresh Water Generator di Atas Kapal Motor Penumpang Mutiara Ferindo II 2022-05-26T02:44:47+00:00 Andi Hendrawan Aris Sasongko D Hasan Nasution <p>The ejector pump has two main components, namely the electro-motor part and the mechanical part. The electro motor plays a vital role in the activity of draining sea water to the fresh water generator. The electro motor acts as a rotary driver in pump mechanics which has the working principle of converting electrical energy into mechanical energy. Control system and electro protection. The purpose of this research is to determine the cause of overload on a mechanical motor pump. The research was conducted by observation, namely direct observation of the pump which functions as an auxiliary machine. The results show that because the bearings experience excessive heat due to the connection at the center of the motor with the pump not being centered. Gland packing experiencing high speed events so that the shaft is difficult to rotate.</p> 2022-06-28T00:00:00+00:00 Copyright (c) 2022 Jurnal Maritim Polimarin Analisis Persepsi Mahasiswa Terhadap Pelaksanaan Pembelajaran Dalam Jaringan (Daring) Mata Kuliah Praktik Fisika Terapan 2022-05-25T14:26:58+00:00 Purwanto Purwanto Arif Rakhman Suharso Susanto <p>Vocational campuses are campuses where most of the learning is carried out through practice with the aim that students have more skills and competencies when working in industry. However, in the COVID-19 pandemic situation, all learning must be carried out online, both theoretical and practical courses. The purpose of this study was to determine the level of feasibility and success of the online learning of applied physics practicum courses at the Politeknik Maritim Negeri Indonesia through analysis of student perceptions with the provision that the perception index is positive if it has a percentage of &gt;40%. The method used in this research is descriptive quantitative. The object of this research is students who take practical applied physics courses from the Nautika study program. The number of students who filled out the questionnaire was determined by using a purposive random sampling technique. The data was obtained through a googleform questionnaire and shared via whatsapp messages. The results of the study showed that the student perception index got a positive value with a feasibility percentage of 87% for the component of teaching and learning activities, 98% for the component of lecturer competence and 88% for the component of facilities and infrastructure.</p> 2022-06-28T00:00:00+00:00 Copyright (c) 2022 Jurnal Maritim Polimarin Peranan Alat Deteksi Kebakaran Dalam Menunjang Keselamatan di Kapal MT. Mabrouk 2022-05-26T02:40:03+00:00 Erwin Sutantyo Susanti Susanti <p>One of the efforts to prevent or reduce accidents at work is the use of work safety tools. Fires can occur anywhere, one of which can occur in water transportation equipment, namely ships. Ship accidents caused by fire hazards are very likely to occur. Ships must be detected early to prevent the occurrence of such fires. Therefore, it is necessary to know the use of fire detection equipment in supporting safety on ships. The aim is to prevent fire hazards from spreading and support the ship’s safety, cargo, and, humans. life. This research was carried out on the ship MT Mabrouk. The method used in this research /is a qualitative method that produces descriptive data. Based on the results of research and discussion of problems regarding the fire detection equipment, It was found that there were problems with the ship's lack of coordination with the company and the responsibility of the ship's officers for fire detection equipment that is lacking so that the fire detection device does not function properly. Therefore, the captain must ensure that safety equipment such as tools to start activities to achieve safety from fire hazards is also carried out to control reports made by officers responsible for this equipment. The results of the research and observation can be concluded that shipping companies pay less attention to safety for their crews including ships and their cargo because of a lack of concern for the procurement of safety equipment on board. The author’ is that it is hoped that the participation of shipping companies in supporting the procurement of ship safety equipment for safety at sea.</p> 2022-06-28T00:00:00+00:00 Copyright (c) 2022 Jurnal Maritim Polimarin Analisa Penyebab Penurunan Kinerja Cargo Oil Pump dan Seat Ring Valve Terhadap Kelancaran Discharge Cargo di Kapal Tanker 2022-05-26T02:37:01+00:00 Ahmad Ndori Susanto Susanto Duchan Adief Achriyan <p><em>T</em>he condition of the ship is very influential in one of the transportation. The results of field study observations on the ship MT. Dewayani, the authors found a cargo that could not be sucked in by the cargo oil pump (COP). This is due to a damaged valve seat ring. This study aims to determine the impact of the seat ring valve on the COP system, determine the factors causing the seat ring valve damage, and determine the role of the crew in maintaining the seat ring valve. The research method used is descriptive qualitative. Observations, interviews, literature studies, and documentation studies were conducted to collect data. The results of the study concluded that a damaged ring valve caused air to enter the COP system which had no bad impact. The cause of the seat ring valve damage is the lack of maintenance and the lack of professionalism of the crew, overrunning hours, and spare parts not according to the manual book. The role of the crew is to carry out maintenance according to PMS, operate according to the manual book, be calm and focused when there are problems, and cooperate between crew members.</p> 2022-06-28T00:00:00+00:00 Copyright (c) 2022 Jurnal Maritim Polimarin Pengaruh Pendidikan Praktek Kewirausahaan Dan Ekspektasi Pendapatan Terhadap Minat Berwirausaha Mahasiswa 2022-05-26T02:32:28+00:00 Ari Ani Dyah Setyoningrum <p>The COVID-19 pandemic provides very valuable learning, especially for students to make breakthroughs in entrepreneurship. Entrepreneurship provides opportunities for students to earn income. With entrepreneurship, the opportunity to earn a large income is wide open than being an employee. Expectations or hopes for a better income are one of the factors that influence whether a person wants to become an entrepreneur or not (Afrizal, Rafiy, &amp; Nusantara, 2018). In addition, entrepreneurship practice education also affects students' interest in entrepreneurship. Entrepreneurial mental attitude in students can be instilled through entrepreneurship practice education based on entrepreneurial values ​​(Suryana, 2013). The purpose is to analyze the effect of income expectations and entrepreneurial practice education on students' interest in entrepreneurship. This research design uses quantitative research methods. Data collection techniques were carried out by interviews and questionnaires. The analytical technique used in this research is descriptive statistics. The analytical tool used is the SmartPLS version 3.0 software. The research prove that the variables of income expectations and entrepreneurial practice education have a significant positive effect on students' interest in entrepreneurship.</p> 2022-06-28T00:00:00+00:00 Copyright (c) 2022 Jurnal Maritim Polimarin