Shipping has become a "vital" part of the worldwide supply chain. With the expansion of the transport industry, carbon dioxide (CO2) and greenhouse gas (GHG) emissions from this sector are increasing rapidly. According to recent European Commission statistics, the marine transport industry emits approximately 940 million tonnes of CO2 and produces 2.5% of greenhouse gas annually. Vessels currently use HFO, a filtrate derived from the distillation of crude oil Crude oil contains sulphur and is emitted by vessels during transportation. This sulphur is not only harmful to human health and contributes to respiratory and human diseases, but SO2 also causes acid rain, which is highly harmful to crops and ocean species and acidifies the oceans. To minimize these harmful effects, Green Shipping is becoming more popular day by day. In Green Shipping, ships are encouraged to make use of resources and energy to preserve the global environment from GHGs and environmental pollutants. It promotes cleaner practices for emissions control, effective harbour management, and equipment management.