Irwin Yachts 31
Masthead Sloop · Keel/centreboard · First built 1968
A versatile masthead sloop or yawl from Ted Irwin, featuring a keel-centerboard configuration for flexible draft
Designed by Ted Irwin.
- LOA
- Beam
- Draft (max)
- Displacement
- Ballast
- Hull type
- Keel/Cbrd.
Is it for you?
Character
Where this design lands on the numbers a shopper trusts — read straight from her own ratios.
Her heavy displacement on a moderate beam gives 29 — a moderate, middle-of-the-road motion.
1.81 — just under the 2.0 offshore line; her beam is modest for her weight.
389 — very heavy for her waterline, a serious load-carrying cruiser.
15.9 — moderate power for her weight; steady, all-round performance.
40% of her weight is ballast — moderately stiff, a middle-of-the-road stability.
A capable cruiser that sits just inside the offshore line — coastal work with real passages in her.
- Heavier than ~80% of boats her size on file
- Draws more than ~88% of boats her size on file
Compared with 419 boats of the same type within a quarter of her length.
The record
Full specifications
The complete reference set — tap any figure to switch between metric and imperial.
Boats like this, on the water
Nobody has filmed this one — but these are close.
Comparable boats the fleet has on camera: same type, within a quarter of her length. Open the boat, or watch the video — a timestamp means she only appears in passing.
The family
Related models
The designs closest to hers — usually the rest of the builder's range, sometimes the same hull sold under another name.
Keep looking
Nothing filmed of this one yet
Two ways to keep looking — both search what the fleet has actually recorded.
The newsletter
New boats, new stories, from everywhere.
One email from the fleet — boats newly added, videos newly analyzed. No noise.