The bunker sector has undergone a comprehensive change in the reduction of harmful emissions, with the conversion from coal to liquid fuels, triggering increased awareness of environmental damage caused by marine pollution. Since emissions have declined substantially in almost all other sectors, and especially in land transport, interest has shifted to the maritime industry and practices are based on emission reduction at sea. It seems that a series of mandatory cleaning procedures that started with national and international regulations in 2006 will continue for another decade and beyond. In the meantime, due to the production capabilities of local refineries during the transition from high sulfur fuel to low sulfur fuel, which causes the situation and planning for vendors and users, caused by the related applications, the problem about the availability of low sulfur fuel in all ports creates an uncertainty and reluctance in ship-related solutions or investments. . High sulfur Fuel Oil is economical, however, its price is not economical, it does not have a positive impact on nature and human health. The cleaning process, which started in 2006 and commissioned by a series of national and international regulations mentioned above, will move the industry away from Heavy Fuel Oil (HFO) and continue to diversify for cleaner fuels that have less harmful effects on the environment and human health. However, there are no unknowns about these regulations, which make planning difficult for the supplier and the consumer, as a result of this, a reluctance to change from investment and ship-sourced solutions to the use of high sulfur product to low sulfur product. The key change in this regard is the requirement to use less, maximum 0.10% sulfur fuel in the Emission Control Area, which will cover the Baltic and Northern Seas (ECA), since the beginning of 2015. The areas that include 200 nautical miles covering the Baltic and North Seas, the English Channel, and the North American coast in the Caribbean and Puerto Rico. Meanwhile, typical technical problems that shipowners will face when using low sulfur fuel or switching to another type of fuel include delays in the supply and storage of fuel, use of one type of fuel from another to use, incompatibility of fuels, and technical and operational difficulties during use. To avoid such problems, shipowners should consult their machine and boiler manufacturers about equipment related to low sulfur fuel use and the operational advice needed for system modification. The procedure for switching to different fuels on each ship must be clearly defined and understood by the personnel. Marine pollution caused by ships is an international problem by its nature. The “International Convention on the Prevention of Pollution of the Seas by Ships” (MARPOL) is the leading contract signed to prevent ships from polluting the seas. When talking about Environmental Safety and Pollution, it is not only harmful emissions caused by bunker and marine oils, of course! The two main objectives of this Convention, prepared by the International Maritime Organization (IMO); preventing the deliberate pollution of the seas by oil, toxic liquids, packaged harmful substances, sewage and garbage and minimizing the marine pollution that may be caused by ships. In order to achieve these goals, countries must take all kinds of technical and managerial measures, prepare their ports and coastal facilities and crews, complete the necessary institutional structuring and legislative deficiencies in the shipping and management of ships.