Considering that natural gas is the cleanest fuel among fossil fuels, LNG is also considered one of the best fuels in terms of environmental benefits compared to traditional fuels in the transport sector. LNG can be used as a fuel in the transportation sector for heavy trucks and for marine transport. LNG can be traded and traded with a positive profit margin in competition with gasoil, diesel, and boats fuel (MGO) and even CNG. One of the applications of small scale LNG is its use as a fuel in the maritime transport sector, which is considered as the most demand and one of the main drivers for the development of a small scale LNG in Scandinavia and the Baltics. In order to use LNG as a fuel in the maritime transport sector, ship owners and their tenants must comply with the rules laid down in the Sulfur Controls (SECAs). Maritime transportation is divided into two parts of emission control area (ECA) and shipping in international waters. The use of LNG ships for the ECA region is a good option because it also has a cost advantage for LNG prices in comparison with marine gasoil (MGO) and that LNG-powered engines have lower emissions of nitrogen oxides. Heavy fuel oil ships with equipment for reducing or removing sulfur oxides are less appealing to customers due to the need for waste management and space requirements. The contribution of LNG ships to various factors depends on:
• The number of new ships
• The share of LNG from new ships as well as ships that have replaced their engines.
• Number of old diesels dropped out.