BoatsCape Dory 30C

Cape Dory 30C

Cutter · Full Keel · 1976–1987

A cutter-rigged cruiser with a full keel and a 1.27-metre draft, built for steady performance between 1976 and 1987

Designed by Carl Alberg.

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

See her sail

The Cape Dory 30C, on the water

The fleet's own footage — the truest look at how she really moves.

Footage from Atom Voyager

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

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

Sail area / displacement 15.1
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.

What the fleet has seen

The Cape Dory 30C, as the fleet has seen it

Derived from the videos the fleet has analysed of this model. ▶ marks open the moment aboard.

The Cape DORY 30C is a 9.2-meter cutter-rigged sailboat with a full keel, designed by Carl Alberg and built by Cape Dory Yachts from 1976 to 1987. It displaces 4535 kg with a 1.3-meter draft and a 2.7-meter beam. A ketch variant, the Cape Dory 30K, was also available. Aboard *Atom Voyager*, a Cape DORY 30C named *Flying Spur* underwent a comprehensive refit after a Bahamas cruise, which included replacing a failed diesel engine with a 9.9 hp Yamaha outboard and considering a 10 kW electric motor.0:20 The refit also involved installing a manual anchor windlass, replacing canvas non-skid with painted non-skid, and building a custom hard dodger.2:26 The crew removed the staysail boom to make the sail loose-footed.1:43 Below deck, leaking 30-gallon plastic water tanks were slated for replacement with larger fiberglass integral tanks, and the v-berth liner was removed to reclaim hull space, rebuilt as watertight collision bulkheads with gasket-sealed lockers.5:43 The chain locker floor was lowered to drop chain weight, and bilge access was improved.0:49 Seven unused through-hulls were removed and patched with biaxial fiberglass cloth and epoxy.1:16 The refit also included removing fiberglass hull liners to increase interior storage and improve access to the hull-to-deck joint, replacing a deep double sink with a shallower single basin, and installing a gimballed Origo alcohol stove.5:55 A custom solar arch was built from 1¼-inch anodized aluminum pipe and Speed Rail fittings to clear the wind vane and carry two 200-watt and two 100-watt solar panels.

The living fleet

Sailed by the fleet

Where the fleet has filmed this boat.

Seen 5 times across one channel of the fleet.

Basemap © Wikimedia Commons · CC BY-SA 4.0

On the water

The Cape Dory 30C on video

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
Cutter
Ratios
SA / displacement
15.1
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
1976–1987
Units built
363
Designer
Carl Alberg
Builder
Cape Dory Yachts

Boats like this, on the water

More boats like her, on the water

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.

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
Allied Boat Co. Seawind9.30 mSame hull familyNear-identical lengthA Thomas Gillmer-designed masthead ketch with a long keel, marking both the beginning and the end of the Allied Boat Co.

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.

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