Seawanhaka Sea Bird
Fractional Sloop · Fin Keel · First built 1938
A Sparkman & Stephens fractional sloop with a narrow beam and high sail area, designed for nimble performance
Designed by Sparkman & Stephens, built by Penn Yan Boats.
- LOA
- Beam
- Draft (max)
- Displacement
- Ballast
- Hull type
- Fin Keel
Is it for you?
Character
Where this design lands on the numbers a shopper trusts — read straight from her own ratios.
Her moderate displacement on a narrow beam gives 14 — a quick, lively motion that feels every wave.
1.93 — just under the 2.0 offshore line; her beam is modest for her weight.
225 — moderately heavy for her waterline, a balanced cruising weight.
19.7 — plenty of sail for her weight; lively and quick to respond.
45% of her weight is ballast — stiff, standing up well to her sails.
Powered-up and quick to accelerate — this one likes to sail.
- Lighter than ~95% of boats her size on file
- Draws less than ~79% of boats her size on file
- Narrower than ~99% of boats her size on file
Compared with 1387 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.
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