Fuel selection is not only about emissions or cost - tank space often becomes the limiting factor. This article compares marine fuels by volumetric energy density (VLSFO as reference), shows why HFO/LFO have historically dominated, and why methanol is a practical alternative fuel from a ship design perspective. Methanol still requires roughly 2–2.5× the tank volume of conventional fuels, but performs better than ammonia or hydrogen for volume-constrained ships.

This Q&A session explores the role of low-carbon ammonia in decarbonizing the maritime industry, featuring Jean and Paul, co-founders of Ten08, a Houston-based company developing low-carbon ammonia for industrial and maritime use. Ten08’s mission is to supply the maritime sector with scalable and clean ammonia.

This thesis performs a technical, economical and environmental feasibility study of three dense hydrogen carriers as a fuel to power the largest semi-submersible offshore crane vessel in the world – Heerema’s Sleipnir.