Analisis Kinerja Esg Operasi Kapal Tunda Konvensional Dan Dual Fuel Diesel-LNG Di Terminal LNG

Trihasta, Anggi Suardi Widya (2026) Analisis Kinerja Esg Operasi Kapal Tunda Konvensional Dan Dual Fuel Diesel-LNG Di Terminal LNG. Masters thesis, Institut Teknologi Sepuluh Nopember.

Text 6019241022_Master_Thesis.pdf Restricted to Repository staff only Download (2MB) | Request a copy

Abstract

Kapal tunda di terminal LNG beroperasi dengan intensitas manuver tinggi dan beban mesin yang fluktuatif pada area pelabuhan terbatas, sehingga menghasilkan emisi lokal yang cukup besar dan menurunkan kualitas udara di sekitar pelabuhan. Kondisi ini berjalan seiring dengan meningkatnya tekanan global untuk mendekarbonisasi sektor maritim sesuai strategi pengurangan gas rumah kaca International Maritime Organization (IMO). Meskipun demikian, pemilihan bahan bakar kapal tunda umumnya masih dievaluasi dari aspek teknis dan lingkungan saja, dan belum dinilai secara terpadu dengan mempertimbangkan aspek sosial serta tata kelola. Penelitian ini mengevaluasi operasi kapal tunda konvensional dan dual fuel Diesel–LNG di terminal LNG menggunakan kerangka Environmental, Social, and Governance (ESG). Penelitian ini mengevaluasi operasi kapal tunda konvensional dan dual fuel Diesel–LNG di terminal LNG menggunakan kerangka Environmental, Social, and Governance (ESG). Metode riset yang digunakan adalah metode campuran (mixed methods) yang mengombinasikan analisis kuantitatif dan kualitatif secara terintegrasi. Analisis kuantitatif digunakan untuk menghitung konsumsi energi, emisi Tank-to-Wake (CO₂, NOx, SOx, dan particulate matter), serta biaya bahan bakar; sedangkan analisis kualitatif–semikuantitatif digunakan untuk menilai dimensi Social dan Governance melalui kuesioner kepada perwira kapal. Kedua jenis analisis diterapkan pada data operasional aktual dua kapal tunda yang setara, yaitu HT Kosak (diesel) dan HT Transko Rajawali (dual fuel), pada tiga skenario: diesel konvensional (baseline), dual fuel Diesel–LNG, dan biodiesel B50 sebagai opsi transisi. Ketiga dimensi ESG kemudian diintegrasikan dengan pembobotan 0,4E + 0,3S + 0,3G. Hasil penelitian menunjukkan sistem dual fuel Diesel–LNG unggul pada hampir seluruh parameter, dengan penurunan konsumsi energi 41,86%, penurunan emisi CO₂ 56,34%, dan penghematan biaya bahan bakar 55,77% per siklus operasi. Dalam kerangka ESG, sistem dual fuel memperoleh nilai tertinggi (93,78%), diikuti B50 (75,09%) dan diesel konvensional (67,09%), dengan dimensi Environmental sebagai pembeda utama. Simulasi peningkatan blending biodiesel secara bertahap dari B50 (2026) hingga B100 (2050) menurunkan emisi CO₂ tahunan kedua kapal, sehingga jalur ini melengkapi strategi konversi bahan bakar. Secara kumulatif hingga 2050, dual fuel berpotensi menghindarkan sekitar 600 ton CO₂ (56,3%) dan B50 sekitar 167,6 ton (35,49%) dibandingkan baseline. Penelitian ini menyimpulkan bahwa keputusan transisi energi kapal tunda tidak dapat didasarkan pada satu dimensi tunggal, melainkan memerlukan kerangka evaluasi terpadu seperti ESG, dengan penerapan B50 sebagai langkah jangka pendek dan dual fuel Diesel–LNG sebagai arah jangka menengah–panjang setelah kajian kelayakan investasi.
====================================================================================================================================
Harbor tugs at LNG terminals operate with high maneuvering intensity and fluctuating engine loads within confined port areas, producing localized emissions that reduce port air quality. This coincides with growing global pressure to decarbonize the maritime sector under the International Maritime Organization (IMO) greenhouse gas reduction strategy. Nevertheless, fuel selection for harbor tugs is generally still evaluated only from technical and environmental perspectives, without integrating social and governance aspects. This study evaluates conventional and Dual Fuel Diesel–LNG harbor tug operations at an LNG terminal using an Environmental, Social, and Governance (ESG) framework. The research method is a mixed-methods approach that integrates quantitative and qualitative analysis. The quantitative analysis is used to compute energy consumption, Tank-to-Wake emissions (CO₂, NOx, SOx, and particulate matter), and fuel costs, whereas the qualitative–semi-quantitative analysis is used to assess the Social and Governance dimensions through questionnaires administered to ships’ officers. Both analyses are applied to the actual operational data of two comparably tasked harbor tugs, HT Kosak (diesel) and HT Transko Rajawali (dual fuel), across three scenarios: conventional diesel (baseline), Dual Fuel Diesel–LNG, and biodiesel B50 as a transitional option. The three ESG dimensions are then integrated using a weighted scoring of 0.4E + 0.3S + 0.3G. The results show that the Dual Fuel Diesel–LNG system outperforms the alternatives on nearly all parameters, with energy consumption reduced by 41.86%, CO₂ emissions by 56.34%, and fuel costs by 55.77% per operating cycle. Within the ESG framework, the dual fuel system obtains the highest score (93.78%), followed by B50 (75.09%) and conventional diesel (67.09%), with the Environmental dimension as the main differentiator. Progressively increasing the biodiesel blend from B50 (2026) to B100 (2050) further lowers both vessels’ annual CO₂ emissions, complementing the fuel-conversion strategy. Cumulatively to 2050, the dual fuel system could avoid about 600 tons of CO₂ (56.3%) and B50 about 167.6 tons (35.49%) relative to the baseline. This study concludes that energy transition decisions for harbor tugs cannot rely on a single dimension but require an integrated framework such as ESG, with B50 as a short-term measure and Dual Fuel Diesel–LNG as the medium- to long-term direction after an investment feasibility study.

Item Type:	Thesis (Masters)
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering 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 > VM731 Marine Engines V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM773 Ship propulsion, Electric
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36101-(S2) Master Theses
Depositing User:	Anggi Suardi Widya Trihasta
Date Deposited:	05 Aug 2026 01:46
Last Modified:	05 Aug 2026 01:46
URI:	http://repository.its.ac.id/id/eprint/143536

Actions (login required)

View Item