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All Journal Jurnal Aplikasi Pelayaran dan Kepelabuhanan Indonesian Journal for Physical Education and Sport
Riswanto, Adi
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Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering Health Professions Social Sciences Transportation

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Pengaruh Pass And Move Training terhadap Peningkatan Kemampuan Passing dan Control Atlet Sepak Bola U-15 di Akademi R19 Kendal Tahun 2022 Riswanto, Adi; Sudarmono, Martin
Indonesian Journal for Physical Education and Sport Vol 4 (2023): Edisi Khusus 1
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/inapes.v4i0.61727

Abstract

The aim of the study was to determine the effect of pass and move training on improving the passing and control abilities of U-15 football athletes at the Kendal R19 Academy. The research method uses experimental research with a population and sample of 20 athletes. The results of the first hypothesis research obtained were 19.304 > t table 2.093 with a percentage increase of 33% so that there was an increase in passing ability in the U-15 football athlete at the Kendal Academy of R19. The second hypothesis is that the t value is 9.037 > t table 2.093 with a percentage increase of 28% so that there is an increase in the ability to control the U-15 football athletes at the Kendal Academy of R19. In conclusion, there is an effect of pass and move training on passing ability in U-15 soccer athletes at Kendal R19 Academy. There is also the effect of pass and move training on the control ability of U-15 soccer athletes at the Kendal R19 Academy. So that pass and move training can be a training reference that can improve the athlete's passing and control abilities.
Analysis of Gearbox Ratio Mismatchwith Main Engine RPM, Resulting in High Temperature Lubricating Oil Lubrication in the Gearbox of MV. Prakarsa Mas Riswanto, Adi; Saktiono, Maxima Ari; Awwalin, Rodlitul
JURNAL APLIKASI PELAYARAN DAN KEPELABUHANAN Vol 16 No 2 (2026): bulan Maret
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/japk.v16i2.191

Abstract

Gearbox is a vital component in the ship propulsion system that functions to transmit power from the main engine to the propeller. On the MV. Mas Initiative, found a discrepancy between the gearbox rotation ratio with the RPM of the main engine, which has an impact on increasing the lubrication temperature of the gearbox lubricating oil to exceed the optimal limit. This condition can reduce lubrication efficiency, accelerate component wear, andreduce overall ship performance. This study aims to analyze the factors that cause gearbox ratio mismatch, evaluate its impact on lubricant temperature, and develop technical recommendations to overcome these problems. The method used is descriptive qualitative approach through direct observation, interviews with the crew, and literature studies. The results showed that the main causes of this discrepancy include damage to gearbox components, a non-optimal lubrication system, as well as a lack of regular maintenance. The high temperature of the lubricant has an impact on decreasing the viscosity of the oil and decreasing the efficiency of power transmission. Recommended solutions include regular cleaning of the oil cooler and filter, checking the pressure of the oil pump, as well as regular oil quality testing. It is expectedthat the results of this study canbe a referencein gearbox maintenance to improve the reliability and operational efficiency of the ship.
Co-Authors Awwalin, Rodlitul Martin Sudarmono, Martin Maxima Ari Saktiono