This research aims are additional requirements to comply with greenship requirements, analysing technical and economic due to LNG dual fuel conversion. As the technical aspect of using LNG as fuel, this LNG LCT ISO Tank carrier able to utilize LNG as fuel which it will be installed dual fuel genset from MAN B&W 6L23/30DF for sailing and manoeuvring scenario and VOLVO D16 MG HE KC for additional genset that will be operated for cargo handling and at port scenario. While it needs small power requirements, therefore diesel electric propulsion chosen to propel the ship which is need 401 kW for each shaft. For economic aspect the conversion into LNG as fuel has economically valuable which payback period at year eight, ROI at 12,68% and IRR 15%.

The growth of the energy industry in Indonesia is increasing rapidly. This study concern about the crude and product oil distribution of one of the biggest oil companies in Indonesia. The distribution of crude and product oil requires large capacity particularly designed bunker transportation, which is an oil tanker. However, the enormous size of the tanker causes the tanker must be assisted by a tugboat to berth at the port of any type of waters. In this study, the simulations were conducted at the Marine Region (MR) III of Tanjung Priok Port, which has a basin-shaped berthing area, to determine the needs of tugboats force based on the size of the tankers. The simulations were carried out in MATLAB software by considering Tankers’ principal dimension, environmental data, Tugboat force (Bollard Pull; BP), and Tugboat’s heading angle. Then, those forces should be combined with each other into several scenarios and reviewed its economics based on the “buy”, “lease”, and “combination” scenario, calculated in the Capital Expenditure and Operational Expenditure factors.

The fact that the maritime transport contributes 2.8% of global greenhouse gas (GHG) emissions challenges the ship to reduce the CO2 emissions. International Maritime Organization (IMO) requires limiting the sulphur to 0.5% m/m in the fuel oil used on board ships operating outside designated emission control. One of strategies to comply the IMO regulations is by using the alternative fuels which may contain low or zero sulphur for ship main engine and that is liquefied natural gas (LNG). Instead of retrofitting the diesel engine which economically requires higher cost, engine conversion to dual fuel diesel engine is preferable in this study. Before the conversion of dual fuel diesel engine is implemented, the feasibility study should be performed, both technically and economically. This study focused on the economic analysis due to conversion of dual fuel engine using LNG fuel. The study case in this research is the plan of dual fuel engine conversion of Landing Craft Tank (LCT) as mini-LNG carrier for distributing the LNG ISO tank to power plants in Bali and Lombok. The economic analysis in this study was carried out to adjust several components in Capital Expenditure (CAPEX) and Operational Expenditure (OPEX) that occurred due to dual fuel engine conversion. Finally, the result of this papers shows that the dual fuel engine conversion for mini-LNG carrier for gas distribution is economically feasible since it gives the smaller cost compared to diesel engine.