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Fractional Sloop · Swing Keel · 1976–1985
The Sirius 21 (later Sirius 22) was the first North American production-built, ballasted cruising boat with positive flotation.
Is it for you?
Where this design lands on the numbers a shopper trusts — read straight from her own ratios.
Light and lively — happiest day-sailing and coastal-hopping in settled weather.
The record
The complete reference set — tap any figure to switch between metric and imperial.
The family
Nearby designs by size, type, and era — worth a look alongside her.