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Boats, Design & Rating
FirstShift intelligence on yacht design, IRC and ORC rating, hulls, appendages, class rules and offshore race-boat development.


Storm in a very big teacup: Why banning autopilots won’t bring the crews back
Morning After - S&S 34 - never took kindly to autopilot - especially downwind! Before I get into the detail of this current issue, here is my true story to position where I start from and yes I’m conflicted and unsure. Muckle Flugga, and four people on a small old boat - who didn’t actually need…

Stuart Greenfield
9 min read


The Rolex Middle Sea Race: Why the corners decide it, not the straight line...part one
A month to go and and in two parts here are some ideas on how to win one of the best late season classic offshore races in the World. Rolex Middle Sea race: Always an exciting start in the Grand Harbour Rationing water, then an almighty bang In October 2015 I was navigator and tactician aboard…

Stuart Greenfield
12 min read


Inside the box: Explaining the yacht racing box rule and why it's contentious
A box rule tells a designer the truth up front. Published limits, real freedom inside them, and in its purest form no corrected time at all.

Stuart Greenfield
17 min read


Is there a battle between IRC and ORC?
Twenty-five years after offshore racing’s great handicap split, the real question is no longer which rule is better, but what gives owners the confidence to keep investing. I look at IRC and ORC.

Stuart Greenfield
13 min read


Blunt force: Has a 33-foot scow conquered offshore racing and just proved it round Ireland?
The boats have never been better. So why does the sport keep getting narrower, and who is left to play?

Stuart Greenfield
23 min read


How to design an offshore race boat - it’s a two horse race…
…It’s IRC vs ORC — Two Design Philosophies, Two Boats, Two Truths Here’s a detailed view of how rating rules shape yachts, speed, and outcomes There are two ways to design a racing yacht One is to design a fast boat. The other is to design a boat that can be proven to be fast. That is the divide between IRC and ORC. Both systems work. Both produce winners. But they arrive there through entirely different logic—and that logic shapes everything: • Hull form

Stuart Greenfield
3 min read
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