BoatsCape Cod Knockabout

Cape Cod Knockabout

Fractional Sloop · Centerboard Dinghy · First built 1925

A long-standing New England one-design class that has been raced since 1925 and transitioned to fiberglass in 1960

Designed by Charles S. Gurney.

LOA
Beam
Draft (max)
Displacement
Hull type
Centerboard Dinghy

Is it for you?

Character

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

TrailerableBeam 1.83 m — inside the 2.55 m no-permit tow width across most of Europe, and the 2.59 m US and Canadian limit. About 295 kg of hull, so roughly 900 kg on a trailer: check that against your own towing rating.Ramp-launchableAbout 295 kg of hull, with a keel that raises or a draft shallow enough to float off a trailer — she can go back on the trailer at the ramp, not only into the water.Shoal draftDraws 0.23 m, board up where she has one — creeks, sandbars and thin anchorages most keels have to stay out of.
LivelySea-kindly

Her light displacement on a moderate beam gives 6 — a quick, lively motion that feels every wave.

Comfort ratio 6
CoastalBluewater

At 2.77 she sits above the 2.0 line — beamy for her weight, and happiest coastal.

Capsize screening 2.77
LightHeavy

78 — light for her waterline, so she is easily driven and quick to accelerate.

Displacement / length 78
EasygoingPowered-up

35.2 — a lot of sail for her weight; powered-up and eager, a real performer.

Sail area / displacement 35.2

Light and lively — happiest day-sailing and coastal-hopping in settled weather.

  • Heavier than ~88% of boats her size on file
  • Draws more than ~81% of boats her size on file

Compared with 269 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
Rig & sail area
Rig
Fractional Sloop
Ratios
SA / displacement
35.2
Displacement / length
77.9
Comfort ratio
5.7
Capsize screening
2.77
Hull speed
5.3 kn
Pounds / inch immersion
332
Hull
Hull type
Centerboard Dinghy
Construction
Wood
Production
Years built
First built 1925
Units built
2700
Designer
Charles S. Gurney
Builder
Cape Cod Shipbuilding

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.

Aubin (Chantier Aubin) Snipe4.72 mSame hull family0.8 m shorterA legendary William F. Crosby-designed fractional dinghy that remains one of the world's most active racing classes
LaserPerformance 49er4.88 mSame hull family0.6 m shorterAn Olympic-class high-performance skiff featuring a massive sail-area-to-displacement ratio for elite racing
Small Craft Ltd. Wayfarer4.82 mSame hull family0.7 m shorterAn Ian Proctor-designed centerboard dinghy with a high sail-to-displacement ratio, built since 1957 in wood and fiberglass
Ilca 7 (Laser-International)4.23 mSame hull family1.3 m shorterA Bruce Kirby-designed Olympic class dinghy featuring a simple unstayed cat rig and a lightweight, high-performance hull
Alcort Sunfish4.24 mSame hull family1.3 m shorterWith a high sail-area-to-displacement ratio of 47.02, this nimble 4.24-meter dinghy remains a benchmark for simple

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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