Cal 39 MK II (1-147)
Masthead Sloop · Fin keel, spade rudder · 1978–1982
A Bill Lapworth-designed masthead sloop built for performance, featuring a stiff fin keel and spade rudder configuration
Designed by C. William Lapworth, built by Jensen Marine.
- LOA
- Beam
- Draft (max)
- Displacement
- Ballast
- Hull type
- Fin w/spade 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 moderate beam gives 28 — a moderate, middle-of-the-road motion.
1.87 — just under the 2.0 offshore line; her beam is modest for her weight.
230 — moderately heavy for her waterline, a balanced cruising weight.
17.5 — moderate power for her weight; steady, all-round performance.
41% 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.
- Draws more than ~76% of boats her size on file
Compared with 2906 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.
The newsletter
New boats, new stories. Every week, everywhere.
One email from the fleet — boats newly added, videos newly analysed. No noise.