Evaluasi Efisiensi Pemakaian Bahan Bakar Pada Operasi Ship To Ship (STS) Transfer Dengan Pemasangan Electric Vertical Capstan Di MT Sengeti

Purnomo, Didik Yogo (2026) Evaluasi Efisiensi Pemakaian Bahan Bakar Pada Operasi Ship To Ship (STS) Transfer Dengan Pemasangan Electric Vertical Capstan Di MT Sengeti. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

MT Sengeti P.3007, sebuah kapal tanker produk dan minyak mentah yang dioperasikan oleh PT Pertamina International Shipping, berfungsi sebagai kapal induk untuk operasi transfer antar kapal (Ship-to-Ship/STS) di tanggul luar Balikpapan. Selama lebih dari empat dekade, kapal tersebut bergantung pada boiler bantu berbahan bakar HSD untuk memasok uap bagi peralatan tambat, termasuk sistem winch dan windlass. Ketergantungan berbasis uap ini mengakibatkan konsumsi bahan bakar yang tinggi secara terus-menerus, karena boiler diharuskan beroperasi terus-menerus dalam mode siaga panas bahkan selama periode tidak berlabuh, diperparah oleh penurunan efisiensi termal karena usia boiler yang melebihi 40 tahun. Penelitian ini bertujuan untuk mengukur pengurangan konsumsi bahan bakar HSD yang disebabkan oleh pemasangan Electric Vertical Capstan (EVC), tipe ATHIRA ALC-LP-2006, sebagai pengganti sistem tambat uap; untuk mengevaluasi kelayakan ekonomi investasi EVC; dan untuk mengidentifikasi faktor-faktor teknis yang berkontribusi pada penghematan bahan bakar yang diamati. Pendekatan komparatif kuantitatif digunakan, dengan membandingkan data konsumsi HSD aktual dari Laporan Log Bahan Bakar Bulanan (Formulir E5) di dua periode yang setara: tujuh bulan sebelum instalasi EVC (Januari–Juli 2022) dan tujuh bulan setelah instalasi (Oktober 2022–April 2023). Kelayakan ekonomi dinilai melalui perhitungan Pengembalian Investasi (ROI), periode pengembalian modal, dan Nilai Sekarang Bersih (NPV). Faktor-faktor teknis diidentifikasi menggunakan Analisis Pohon Kesalahan (FTA), dan temuan keseluruhan dievaluasi dalam kerangka kerja Panca Mutu (QCDSM: Kualitas, Biaya, Pengiriman, Keselamatan, Moral). Hasil penelitian menunjukkan bahwa instalasi EVC mencapai pengurangan konsumsi HSD sebesar 54,86% (456,96 KL) selama tujuh bulan, yang terdiri dari penghematan utama dari penghapusan total konsumsi Boiler Bantu sebesar 330,69 KL (72,4%) dan penghematan sekunder dari pengurangan konsumsi Mesin Bantu sebesar 25,14% atau 126,27 KL (27,6%), yang disebabkan oleh penghapusan beban listrik bantu boiler. Secara ekonomi, investasi sebesar Rp 950.000.000 menghasilkan ROI sebesar 1.109,4%, periode pengembalian modal sekitar satu bulan, dan NPV lima tahun sebesar Rp 47,78 miliar. Evaluasi QCDSM mengkonfirmasi bahwa semua dimensi telah tercapai atau terlampaui: nol kali kapal tidak beroperasi (Kualitas), pengurangan biaya sebesar 54,86% (Biaya), waktu persiapan tambat berkurang dari lebih dari satu jam menjadi kurang dari lima menit (Pelaksanaan), penghapusan bahaya uap (Keselamatan), dan pengurangan beban kerja awak kapal secara signifikan (Moral).
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MT Sengeti P.3007, a product and crude oil tanker operated by PT Pertamina International Shipping, serves as a mothership for Ship-to-Ship (STS) transfer operations at Outer barr Balikpapan. For over four decades, the vessel relied on an HSD-fueled Auxiliary Boiler to supply Steam for mooring equipment, including Winch and Windlass systems. This Steam-based dependency resulted in persistently high fuel consumption, as the boiler was required to operate continuously in hot standby mode even during non-mooring periods, compounded by degraded thermal efficiency due to the boiler's age exceeding 40 years. This research aims to quantify the reduction in HSD fuel consumption attributable to the installation of an Electric Vertical Capstan (EVC), type ATHIRA ALC-LP-2006, as a replacement for the Steam mooring system; to evaluate the economic viability of the EVC investment; and to identify technical factors contributing to the observed fuel savings. A quantitative comparative approach was employed, comparing actual HSD consumption data from Monthly Fuel Oil Log Reports (Form E5) across two equivalent periods: seven months before EVC installation (January–July 2022) and seven months following installation (October 2022–April 2023). Economic feasibility was assessed through Return on Investment (ROI), payback period, and Net Present Value (NPV) calculations. Technical factors were identified using Fault Tree Analysis (FTA), and overall findings were evaluated within the Panca Mutu (QCDSM: Quality, Cost, Delivery, Safety, Morale) framework. esults demonstrate that EVC installation achieved a 54.86% reduction in HSD consumption (456.96 KL) over seven months, comprising a primary saving from complete elimination of Auxiliary Boiler consumption of 330.69 KL (72.4%) and a secondary saving from a 25.14% reduction in Auxiliary Engine consumption of 126.27 KL (27.6%), attributable to removal of boiler auxiliary electrical loads. Economically, the Rp 950,000,000 investment yielded an ROI of 1,109.4%, a payback period of approximately one month, and a five-year NPV of Rp 47.78 billion. QCDSM evaluation confirms all dimensions were achieved or exceeded: zero off-hire (Quality), 54.86% cost reduction (Cost), mooring preparation time reduced from over one hour to under five minutes (Delivery), elimination of Steam hazards (Safety), and significantly reduced crew workload (Morale).

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Auxiliary Boiler; Electric Vertical Capstan; Fuel Efficiency; Return on Investment; Ship-to-Ship Transfer
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM276.A1 Fuel (Including supplies, costs, etc.) V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM297 Ships Designs and drawings
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36101-(S2) Master Theses
Depositing User:	Didik Yogo Purnomo
Date Deposited:	04 Aug 2026 08:32
Last Modified:	04 Aug 2026 08:32
URI:	http://repository.its.ac.id/id/eprint/143488

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