BoatsSigma 36 (S&S)

Sigma 36 (S&S)

Masthead Sloop · Fin With Rudder On Skeg · First built 1968

A 1968 Sparkman & Stephens masthead sloop with a 52% ballast ratio, built for offshore stability on a fin-keel hull

Designed by Sparkman & Stephens, built by Cheoy Lee Shipyard Ltd.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Fin With Rudder On Skeg

Is it for you?

Character

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

LivelySea-kindly

Her moderate displacement on a narrow beam gives 34 — a sea-kindly motion in a seaway.

Comfort ratio 34
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

275 — moderately heavy for her waterline, a balanced cruising weight.

Displacement / length 275
EasygoingPowered-up

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

Sail area / displacement 14.4
TenderStiff

52% of her weight is ballast — very stiff, carrying full sail in a blow.

Ballast 52%

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
52.0%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
14.4
Displacement / length
274.6
Comfort ratio
33.6
Capsize screening
1.67
Hull speed
7.2 kn
Pounds / inch immersion
1062
Hull
Hull type
Fin with rudder on skeg
Construction
Fiberglass
Production
Years built
First built 1968
Designer
Sparkman, Stephens
Builder
Cheoy Lee Shipyard Ltd

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 36-211.13 mSame hull family0.2 m longerA 1980s production masthead sloop with a high-aspect fin keel and spade rudder, optimized for performance cruising
Herreshoff Manufacturing Newport 2910.84 mSame hull familyNear-identical lengthA 1914 Nathanael Herreshoff design featuring a fin keel and gaff-rigged sloop sail plan for classic performance
Islander Yachts 3611.00 mSame hull familyNear-identical lengthAn Alan Gurney-designed masthead sloop with a 15-year production run and nearly 800 hulls launched
Moody 36S10.97 mSame hull familyNear-identical lengthAn aft-cockpit variation of the Moody 36, featuring a fin keel and skeg-mounted rudder for balanced coastal cruising
S2 Yachts 11.0 C10.97 mSame hull familyNear-identical lengthA center-cockpit cruiser by Arthur Edmunds, designed for stability and comfort with a skeg-mounted rudder
Westerly Yachts Ltd. Oceanquest 3510.81 mSame hull family0.2 m shorterAn Ed Dubois-designed cruiser sharing its proven hull with the Seahawk and Falcon, available in center or aft cockpit layouts

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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