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All Journal KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Jurnal Teknologi Jurnal Ilmiah Giga IKRA-ITH ABDIMAS PEDULI: Jurnal Imiah Pengabdian Pada Masyarakat Bina Teknika Indonesian Journal of Community Dedication Jurnal Bakti Masyarakat Indonesia Jurnal Teknik Industri Madani : Jurnal Pengabdian Kepada Masyarakat Applied Science and Technology on Naval Engineering Nemui Nyimah WAVE: Jurnal Ilmiah Teknologi Maritim
Amir Marasabessy
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Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Mechanical Engineering Nursing Social Sciences Transportation Other

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Journal : applied science and technology on naval engineering

 1 
Analisis Stabilitas Fasilitas Loading Unloading Crane dan Ship Loader pada Kapal Konversi Jihad Pramayoga; Wiwin Sulistyawati; Amir Marasabessy
Applied Science and Technology on Naval Engineering Vol 3 No 2 (2025)
Publisher : Fakultas Teknik UPN Veteran Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54378/astne.v3i2.11770

Abstract

Kapal MV. Ratu Damai, yang awalnya dirancang sebagai bulk carrier, telah mengalami konversi menjadi Floating Loading Facility (FLF). Konversi ini melibatkan penambahan struktur dan peralatan bongkar muat yang signifikan, yang berpotensi memengaruhi stabilitas kapal secara keseluruhan. Penelitian ini bertujuan untuk menganalisis stabilitas MV. Ratu Damai pasca konversi, dengan fokus pada dampak penambahan alat bongkar muat terhadap parameter stabilitas statis dan dinamis. Metode yang digunakan meliputi perhitungan stabilitas berdasarkan data dimensi kapal, bobot, dan posisi pusat gravitasi (KG) sebelum dan sesudah konversi, serta simulasi berbagai kondisi pemuatan dan operasional. Hasil analisis diharapkan dapat mengidentifikasi perubahan karakteristik stabilitas, menilai kepatuhan terhadap regulasi maritim yang berlaku, dan memberikan rekomendasi untuk memastikan keselamatan operasional kapal.
Analisis Penerapan Metode Value Stream Mapping Pada Proses Bongkar Muat Kapal Container Untuk Meningkatkan Efisiensi Waktu Pada Pelabuhan Sunda Kelapa PT. Pelabuhan Indonesia (Pelindo) Dwiki Faris Alamsyah; Amir Marasabessy
Applied Science and Technology on Naval Engineering Vol 3 No 2 (2025)
Publisher : Fakultas Teknik UPN Veteran Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54378/astne.v3i2.11792

Abstract

The cargo container unloading and loading process is a critical component in port operations, significantly impacting logistical efficiency and operational costs. This study aims to analyze the application of Value Stream Mapping (VSM) to enhance time efficiency in loading and unloading activities at PT. Pelabuhan Indonesia (PELINDO). Inefficiencies in these processes often result in vessel departure delays, increased berthing times, and elevated operational expenditures. Using a quantitative approach, this research gathers primary data through direct field observations and interviews with key stakeholders at Tanjung Priok Port, supported by secondary data on vessel departure delays. The findings reveal multiple non-value-added activities and process waste contributing to inefficiencies. Based on VSM analysis, proposed improvements led to a significant reduction in process cycle time and enhanced overall port operational efficiency. The implementation of VSM proves to be an effective lean tool in streamlining container handling operations. These findings offer practical contributions to PT. Pelabuhan Indonesia in boosting performance and competitiveness, while also serving as a reference for future maritime logistics studies. Keywords: Value Stream Mapping; Time Efficiency; Loading and Unloading; Port Operations; Lean Manufacturing.
Mechanical Characteristics of Pineapple Leaf Fiber and E-Glass Hybrid Composites as an Alternative for Boat Hulls Mohammad Arbeel Falaah; Amir Marasabessy
Applied Science and Technology on Naval Engineering Vol 4 No 2 (2026)
Publisher : Fakultas Teknik UPN Veteran Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54378/astne.v4i2v2.02

Abstract

The transition toward sustainable and eco-friendly materials in the maritime sector has accelerated research intonatural fiber-reinforced composites as potential alternatives to conventional structural materials. This study rigorouslyevaluates the mechanical characteristics of a hybrid sandwich composite structure, strategically incorporatingPineapple Leaf Fiber (PALF) as the core and E-Glass fiberglass as the outer skins. The composite matrix utilizes anepoxy resin modified with 1 gram of Aerosil nanofiller to enhance interfacial adhesion and resin viscosity. To optimizethe fiber-matrix compatibility, the PALF was subjected to varying concentrations of alkaline treatment using SodiumHydroxide (NaOH) solutions at 0%, 5%, 10%, and 15% for a duration of 2 hours. The fabrication of the test specimenswas conducted using the hand lay-up method, ensuring uniform resin distribution and minimizing void formation.Comprehensive mechanical characterizations were performed, including tensile testing in accordance with the ASTMD3039 standard and flexural testing following the ASTM D7264 standard.The experimental results unveiled a distinct bell-shaped performance curve for tensile strength relative to the NaOHconcentration. The optimal Ultimate Tensile Strength (UTS) was achieved at the 10% NaOH variation, recording apeak value of 77.33 MPa. This substantial enhancement is attributed to the optimal delignification process, whichincreased fiber surface roughness and promoted mechanical interlocking without damaging the cellulose structure.Conversely, the 15% NaOH treatment led to a significant degradation of the cellulose microfibrils, plummeting theUTS to 34.00 MPa. In contrast, the flexural test results demonstrated that the maximum Ultimate Flexural Strength(UFS) occurred in the untreated (0% NaOH) variation at 115.00 MPa, with the 10% NaOH variation closely followingat 108.33 MPa. This behavior indicates that the flexural properties of the sandwich composite are predominantlygoverned by the high-stiffness E-Glass outer skins rather than the core material. Finally, the structural viability of thecomposites was assessed against the stringent regulations established by the Indonesian Bureau of Classification (BKI)for small-to-medium fiberglass boat hulls, which mandate a minimum tensile strength of 43.12 MPa. The findingsconfirm that only the 10% NaOH treated hybrid composite successfully surpasses this regulatory threshold, renderingit a highly promising and sustainable alternative material for marine hull construction.
Co-Authors Abyan Ariaputra Aziz Adella Hotnyda Adella Hotnyda Siregar Agus Dwy Bramastha Ahmad Zayadi Ahmad Zayadi Ashfi Rayhan, Fajri Bambang Sudjasta Bambang Sudjasta Bambang Sudjasta BAYU PERMANA Budiman Adi Setyawan Budiman Adi Setyawan Budiman Adi Setyawan Damora Rhakasywi Didit Widiyanto Dwiki Faris Alamsyah ERVINI MELADIYANI Fajri Ashfi Rayhan Fajri Ashfi Rayhan Fajri Ashfi Rayhan Fakhri Akbar Ayub Hatuwe, M Rusdy Hatuwe, Mohammad Rusdy Hatuwe, Rusdy Hatuwe, Rusdy Iswadi Nur Iswadi Nur Jihad Pramayoga Lilik Zulaihah M Rusdy Hatuwe Marsudi Marsudi Mohammad Arbeel Falaah Mohammad Rusdy Hatuwe Muhammad Afrizal Muhammad Sugeri Nur, Iswadi Nurfajriah, Nurfajriah Prayitno, Sugeng Purwo Joko Suranto Rusdy Hatuwe Rusdy Hatuwe Saut Siagian, Saut Setyawan, Budiman Adi Setyawan, Budiman Adi Siregar, Adella Hotnyda Sri Sulasminingsih Sri Sulasminingsih Sudjasta, Bambang Sudjasta, Bambang Sugeng Prayitno Sulasminingsih, Sri Syamsiar, Syamsiar Wiwin Sulistyawati Wiwin Sulistyawati Wiwin Sulistyawati