Alpa Yachts 21
Masthead Sloop · Fin w/transom Hung Rudder · First built 1976
A nimble 6.48-metre masthead sloop with a high sail-area-to-displacement ratio for responsive light-air performance
Designed by Sparkman & Stephens.
- LOA
- Beam
- Draft (max)
- Displacement
- Ballast
- Hull type
- Fin w/transom Hung Rudder
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 beamy beam gives 14 — a quick, lively motion that feels every wave.
2.30 — right around the 2.0 line, the edge between coastal and offshore.
199 — moderately heavy for her waterline, a balanced cruising weight.
19.5 — plenty of sail for her weight; lively and quick to respond.
28% of her weight is ballast — on the tender side; she'll heel readily and want a reef sooner.
Powered-up and quick to accelerate — this one likes to sail.
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
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