Exam Question

### Introduction to Alternative Fuels in Maritime
The International Maritime Organization (IMO) has set ambitious targets for the reduction of greenhouse gas (GHG) emissions from international shipping. To meet these goals, the industry is transitioning away from conventional heavy fuel oil (HFO) and marine gas oil (MGO) towards alternative, cleaner fuels. The selection of an appropriate alternative fuel is a complex decision involving considerations of energy density, storage requirements, safety, environmental impact (on a Well-to-Wake basis), technology maturity, and regulatory frameworks. As noted in current research, the operation of alternative-fuel-powered ships introduces special risks such as spills and vapor dispersion, which the existing international legal framework does not yet fully address.
### Comparison of Key Properties of Potential Alternative Fuels
A comparative analysis of the physical and chemical properties of leading alternative fuel candidates is essential for understanding their respective challenges and benefits. The table below outlines key parameters for Liquefied Natural Gas (LNG), Methanol, Ammonia, and Hydrogen against conventional Marine Gas Oil (MGO).