BoatsCape Dory 30K

Cape Dory 30K

Masthead Ketch · Full Keel · First built 1976

A masthead ketch variant of the Alberg-designed 30-footer, featuring a full keel and a 40% ballast ratio

Designed by Carl Alberg.

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

Is it for you?

Character

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

LivelySea-kindly

Her heavy displacement on a narrow beam gives 33 — a sea-kindly motion in a seaway.

Comfort ratio 33
CoastalBluewater

At 1.67 she sits well under the 2.0 line — a solidly ocean-capable hull for her size.

Capsize screening 1.67
LightHeavy

375 — very heavy for her waterline, a serious load-carrying cruiser.

Displacement / length 375
EasygoingPowered-up

12.7 — modest power for her weight; easygoing rather than lively, and happier with a breeze.

Sail area / displacement 12.7
TenderStiff

40% of her weight is ballast — moderately stiff, a middle-of-the-road stability.

Ballast 40%

Built heavy and sea-kindly — a boat made to cross oceans and forgive a rough night.

The record

Full specifications

The complete reference set — tap any figure to switch between metric and imperial.

Dimensions
Weights
Ballast / displacement
40.0%
Rig & sail area
Rig
Masthead Ketch
Ratios
SA / displacement
12.7
Displacement / length
375.2
Comfort ratio
33.1
Capsize screening
1.67
Hull speed
6.4 kn
Pounds / inch immersion
734
Hull
Hull type
Full Keel
Construction
Fiberglass
Ballast type
Lead
Production
Years built
First built 1976
Designer
Carl Alberg
Builder
Cape Dory Yachts

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.

Cape Dory 30C9.21 mSame hull familyNear-identical lengthA cutter-rigged cruiser with a full keel and a 1.27-metre draft, built for steady performance between 1976 and 1987
Pacific Seacraft Orion 279.42 mSame hull family0.2 m longerA heavy-displacement cutter designed by Henry Mohrschladt for offshore stability and traditional long-keel handling
Sea Sprite 309.20 mSame hull familyNear-identical lengthA 9.2-metre cruiser with a 41% ballast ratio, delivering a stiff and steady motion for coastal passages
Cape Dory 288.56 mSame hull family0.7 m shorterA classic Carl Alberg full-keel masthead sloop designed for steady, comfortable cruising
Bayfield 30/329.75 mSame hull family0.5 m longerA rare 32C variant featuring a tall rig, built in a limited run of five hulls for increased sail area
Alberg 309.22 mSame hull familyNear-identical lengthA 25-year production classic with a heavy displacement-to-length ratio that remains a capable choice for offshore passages

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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