BoatsCobra Yachts 850

Cobra Yachts 850

Masthead Sloop · Twin keels · First built 1976

A 1976 masthead sloop with a 45% ballast ratio, offering a stable and stiff platform for coastal exploration

Designed by David Feltham.

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

Is it for you?

Character

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

Shoal draftDraws 1.07 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 25 — a moderate, middle-of-the-road motion.

Comfort ratio 25
CoastalBluewater

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

Capsize screening 1.92
LightHeavy

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

Displacement / length 325
EasygoingPowered-up

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

Sail area / displacement 15.6
TenderStiff

45% of her weight is ballast — stiff, standing up well to her sails.

Ballast 45%

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

  • Draws less than ~91% of boats her size on file

Compared with 2223 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
45.2%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
15.6
Displacement / length
324.9
Comfort ratio
24.9
Capsize screening
1.92
Hull speed
6.3 kn
Pounds / inch immersion
747
Hull
Hull type
Twin Keel
Construction
Fiberglass
Production
Years built
First built 1976
Units built
700
Designer
David Feltham
Builder
Cobra 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.

Dufour Arpege 309.14 mSame hull family0.5 m longerA record-breaking production of over 1500 units, this MORC-compliant racer-cruiser defined a new standard for the 30-foot class
Ericson Yachts 298.71 mSame hull familyNear-identical lengthA 1970s masthead sloop with a 1.32-meter draft and a 45% ballast ratio, balancing coastal stability with shoal access
Hunter Marine 278.28 mSame hull family0.4 m shorterA John Cherubini-designed masthead sloop built for a decade, featuring a skeg-mounted rudder and shoal-draft options
Shannon Yachts 288.53 mSame hull family0.2 m shorterA fin-keeled cutter with a transom-hung rudder, built for coastal cruising with a stiff 38% ballast ratio
Cascade Yachts 278.23 mSame hull family0.5 m shorterA masthead sloop with a fin keel and spade rudder, designed by Robert A. Smith for balanced coastal cruising
Cal Boats 309.14 mSame hull family0.5 m longerOffered with an optional tall rig, this masthead sloop served as the predecessor to the 2-30 series

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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