The use of traditional fossil fuels has been an integral part of the shipping industry though it also causes significant harm to the environment. Thus, there has been a push toward researching and utilising alternative fuels which offer cleaner options. Amongst the potential fuel alternatives are liquid natural gas, hydrogen, liquefied petroleum gas and methanol though as one would expect, change cannot come overnight with aspects such as engine modifications needed. However, in time, the partial or full use of such alternatives will lead to fewer emissions and help the industry achieve its sustainability goals.