When super maxi Master Lock Comanche swept across the line to claim line honours in the 2025 Rolex Sydney to Hobart, the spotlight naturally fell on the hundred footer's size, speed and crew work. But deep in the background was the quiet, methodical craft of Andy Green, the boat’s navigator and one of the most respected technical brains on the international racing circuit.

The 80th Rolex Sydney to Hobart is almost here. For sailors, this race is never just about wind angles and sail changes. The ocean itself is a player — this year it’s shaping up to be an intriguing one. 

The UK Hydrographic Office (UKHO) and France’s national hydrographic and oceanographic office, Shom, have launched what is arguably the most ambitious test of S-100 data standards yet. Their international sea trials programme, running under the International Hydrographic Organisation’s (IHO) coordinated testbed framework, is not just a technical exercise, it’s a glimpse into the future of maritime navigation.