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This Author published in this journals
All Journal Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) Ocean Engineering: Jurnal Ilmu Teknik dan Teknologi Maritim Journal of Engineering Science and Technology Management Jurnal 7 Samudra Politeknik Pelayaran Surabaya Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Kalao’s Maritime Journal Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Sri Mulyanto Herlambang
Unknown Affiliation
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Transportation

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Journal : journal of engineering science and technology management

 1 
The Role of the Venus Application (Vessel Network System) as a Digital Innovation to Increase the Effectiveness of the Crew Change Process at PT Pertamina International Shipping Siti Aurum Eka Nursasi; Rizqi Aini Rakhman; Sri Mulyanto Herlambang; Faris Nofandi
Journal of Engineering Science and Technology Management (JES-TM) Vol. 6 No. 2 (2026): June 2026
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v6i2.413

Abstract

This study evaluates the Venus (Vessel Network System) application as an in-house digital crewing system that supports the crew change process at PT Pertamina International Shipping. The study used a quantitative descriptive approach supported by direct operational observation. Respondents consisted of 31 internal users who were directly involved in crew scheduling, document verification, approval, monitoring, and interdepartmental coordination through Venus. Data were collected using a Likert-scale questionnaire that measured the importance and performance of 12 system and service indicators, and the results were analyzed using validity testing, reliability testing, and Importance-Performance Analysis (IPA). The findings show that Venus was perceived positively by internal users, with an average importance score of 4.77 (95%) and an average performance score of 4.73 (94%). The application supports scheduling visualization, crew document monitoring, and approval coordination, thereby helping users reduce manual communication and improve operational visibility. However, IPA mapping indicates that four high-importance indicators still require priority improvement: fulfillment of crew change needs, timeliness, data security, and interdepartmental coordination. These gaps show that the effectiveness of Venus should be interpreted as perceived system effectiveness among internal users, while further improvement is needed in system quality, service quality, access control, deadline tracking, and workflow escalation. The study contributes to the evaluation of maritime human-resource information systems by combining user-perception measurement with field observation of digital crew change operations
Analysis Of The Causes Of Suboptimal Steering Gear Performance Based On Maintenance Factors And The Quality Of Spare Parts On MV. Mulianim Muhammad Dion Putra Widjaya; Ari Yudha Lusiandari; Sri Mulyanto Herlambang; Antonius Edy Kristiyono; Shofa Dai Robbi
Journal of Engineering Science and Technology Management (JES-TM) Vol. 6 No. 3 (2026): September 2026
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v6i3.484

Abstract

The operational reliability of a ship's steering gear system is vital for navigation safety and vessel maneuverability, as regulated by International Maritime Standards (SOLAS). However, performance degradation often occurs due to inadequate maintenance practices and spare part constraints. This study aims to analyze the root causes of suboptimal steering gear performance on MV. Mulianim using a qualitative case study approach. Data were gathered through direct field observations, semi-structured interviews with chief and engine officers, and documentation audits (Engine Log Book and PMS records) over a 12-month period. Data validity was verified through source triangulation and analyzed using Miles and Huberman’s interactive model combined with Cause-and-Effect Analysis. The results revealed that steering gear hydraulic pressure dropped below the operational baseline (85–90 bar vs. standard 100 bar) due to high fluid turbidity, degraded viscosity, and internal bypasses. This condition was directly triggered by a 26.7% delay in Planned Maintenance System (PMS) tasks and severe spare part stockouts (25% critical spares unavailable). To prevent navigational hazards, strict adherence to PMS schedules and optimization of the spare part procurement pipeline are strongly recommended.
Co-Authors Aditya Putra Mahendra Akhmad Kasan Gupron Antonius Edy Kristiyono Ari Yudha Lusiandari Belva Pradana Putra Hartono Eddi Eddi Faris Nofandi Frisca Mareyta Hendra Purnama Kustanto, Jaka Septian Muhammad Dion Putra Widjaya Nurdiansari, Henna Okky Hermawanto Prima Yudha Yudianto R.Novi Andri Setiawan Rivo Restu Ananda Putra Rizki Kurniawan, Rizki Rizqi Aini Shofa Dai Robbi Siti Aurum Eka Nursasi