Seafarer Yachts 31 MKI
Masthead Sloop · Fin With Rudder On Skeg · 1968–1974
A William Tripp Jr. design available as a sloop or yawl, famously offered in kit form for the home builder
Designed by William H. Tripp Jr, McCurdy & Rhodes.
- LOA
- Beam
- Draft (max)
- Displacement
- Ballast
- Hull type
- Fin With Rudder On Skeg
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 narrow beam gives 30 — a moderate, middle-of-the-road motion.
1.72 — just under the 2.0 offshore line; her beam is modest for her weight.
351 — very heavy for her waterline, a serious load-carrying cruiser.
15.7 — moderate power for her weight; steady, all-round performance.
39% of her weight is ballast — moderately stiff, a middle-of-the-road stability.
Built heavy and sea-kindly — a boat made to cross oceans and forgive a rough night.
- Draws less than ~79% of boats her size on file
- Narrower than ~81% of boats her size on file
Compared with 2632 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
Boats like this
Nearby designs by size, type, and era — worth a look alongside her.
Keep looking
Nothing filmed of this one yet
Two ways to keep looking — both search what the fleet has actually recorded.
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