Where Every Detail Counts: How designing for a modern classic demands a different way of thinking.

At first glance, Nirvana looks like a beautifully restored classic yacht. In reality, she's something rather special, a faithful 2011 recreation of a 1939 International Six Metre that was lost to fire two decades later. While her lines honour the past, her racing programme is anything but nostalgic.

For Ullman Sails' Chief Technical Consultant, Brad Stephens, designing a sail inventory for Nirvana meant stepping into a world governed by a century-old measurement rule. Unlike modern rating systems such as IRC or ORC, the International Metre Rule places unique demands on sail dimensions and fit, leaving very little room for assumptions carried over from contemporary yacht design.

Fortunately, Brad wasn't starting from scratch.

His experience designing sails for the International 12 Metre class during the 1980s, boats that share the same rule heritage, provided a valuable foundation. Drawing on decades of design data and flying shape analysis, he was able to narrow in on the sail shapes best suited to Nirvana's distinctive characteristics.

Rather than creating a handful of all-purpose sails, the objective was to build a comprehensive headsail inventory, each sail carefully designed with its own flying shape and structural characteristics. Together they provide overlapping performance across changing sea states and wind strengths, giving the crew confidence to make the right sail choice as conditions evolve.

The development has been a true collaboration. Since Rob Larke began supplying measurement and rating data in late 2021, the sail inventory has evolved alongside the sailing team, with every regatta providing another opportunity to refine and improve. That process was on full display during Nirvana's recent European campaign. Beginning with victory at the Cup Kim regatta on Lake Geneva, the team followed with the Swiss Nationals before taking on the International Six Metre European Championship. There, they finished fifth overall while claiming two race wins and a second-place finish against one of the strongest fleets in the class.

Even the downwind sails tell their own story. Six Metre spinnakers bear little resemblance to those found on modern yachts, with their remarkably low aspect ratios demanding an entirely different design philosophy. The latest addition to Nirvana's inventory, a heavy-air S4 spinnaker introduced in 2025, measures an impressive 10.84-metre luff and 8.47-metre mid-girth.

As Brad puts it, it's very much a "hoist the whomper" moment when the sail fills.

It's a reminder that performance doesn't come from a single breakthrough. It comes from understanding the boat, respecting its history, and making hundreds of thoughtful decisions over time. That pursuit of refinement continues every time Nirvana leaves the dock, proving that precision never goes out of style.