BoatsSouth Coast 23

South Coast 23

Masthead Sloop · Long Keel · First built 1965

A Carl Alberg-designed long-keel masthead sloop offered in kit or factory form, sharing its hull with the Kittiwake 23

Designed by Carl Alberg.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Long Keel

Is it for you?

Character

Where this design lands on the numbers a shopper trusts — read straight from her own ratios.

TrailerableBeam 2.21 m — inside the 2.55 m no-permit tow width across most of Europe, and the 2.59 m US and Canadian limit. About 1,701 kg of hull, so roughly 2,300 kg on a trailer: check that against your own towing rating.Shoal draughtDraws 0.86 m, board up where she has one — creeks, sandbars and thin anchorages most keels have to stay out of.
LivelySea-kindly

Her heavy displacement on a moderate beam gives 22 — a moderate, middle-of-the-road motion.

Comfort ratio 22
CoastalBluewater

1.87 — just under the 2.0 offshore line; her beam is modest for her weight.

Capsize screening 1.87
LightHeavy

312 — heavy for her waterline, built to carry stores and ride steadily.

Displacement / length 312
EasygoingPowered-up

16.4 — moderate power for her weight; steady, all-round performance.

Sail area / displacement 16.4
TenderStiff

39% of her weight is ballast — moderately stiff, a middle-of-the-road stability.

Ballast 39%

A capable cruiser that sits just inside the offshore line — coastal work with real passages in her.

  • Draws less than ~84% of boats her size on file
  • Narrower than ~76% of boats her size on file

Compared with 185 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.

Dimensions
Weights
Ballast / displacement
39.3%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
16.4
Displacement / length
312.4
Comfort ratio
21.6
Capsize screening
1.87
Hull speed
5.6 kn
Pounds / inch immersion
453
Hull
Hull type
Long Keel
Construction
Fiberglass
Production
Years built
First built 1965
Units built
250
Designer
Carl Alberg
Builder
South Coast Seacraft Co

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.

Pearson Yachts Ensign6.86 mSame hull familyNear-identical lengthA Carl Alberg-designed fractional day sailor and one-design racer built on the proven Electra hull for active club fleets
Contessa 267.77 mSame hull family0.8 m longerA David Sadler-designed long-keel masthead sloop, built in both England and Canada with a 25-year production run
Pearson Yachts-USA Triton8.63 mSame hull family1.6 m longerA Carl Alberg-designed long-keel fractional sloop that pioneered fibreglass cruising and saw international production.
Flicka 207.32 mSame hull family0.3 m longerA Bruce Bingham-designed cutter with a long keel, originally offered as amateur plans before becoming a production classic
Nor'Sea Marine 278.23 mSame hull family1.2 m longerA masthead sloop with a versatile rig and ballast configuration, designed for trailerable offshore cruising
Vancouver 278.23 mSame hull family1.2 m longerA Robert B. Harris-designed cutter with a long keel, built across two continents to provide a stiff, comfortable passage

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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