BoatsSwarbrick Brothers S&s 34

Swarbrick Brothers S&s 34

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

A Sparkman & Stephens design #1959 masthead sloop, built by Swarbricks as a stiff, seaworthy cruiser with a skeg-hung rudder

Designed by Sparkman & Stephens.

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

Comfort ratio 34
CoastalBluewater

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

Capsize screening 1.72
LightHeavy

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

Displacement / length 398
EasygoingPowered-up

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

Sail area / displacement 12.5
TenderStiff

42% of her weight is ballast — stiff, standing up well to her sails.

Ballast 42%

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
42.0%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
12.5
Displacement / length
397.6
Comfort ratio
34.3
Capsize screening
1.72
Hull speed
6.6 kn
Pounds / inch immersion
880
Hull
Hull type
Fin with rudder on skeg
Construction
Fiberglass
Production
Years built
First built 1968
Designer
Sparkman, Stephens
Builder
Swarbrick Brothers

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.

Mistral 3310.19 mSame hull familyNear-identical lengthA former IOR half-tonner that transitioned from the Hallberg brand to the Hallberg-Rassy line during its 1968-1976 run
Catalina Yachts 31610.06 mSame hull familyNear-identical lengthA 2024 6 Series fractional sloop featuring a deep-draft fin keel and spade rudder for precise coastal handling
Nauticat 33110.10 mSame hull familyNear-identical lengthA sturdy masthead ketch designed for comfortable cruising with a skeg-mounted rudder and a stable, heavy displacement
Westerly 3310.14 mSame hull familyNear-identical lengthA center-cockpit masthead sloop offered with fin or bilge keels, designed for stable cruising and long-range comfort
Westerly Yachts Ltd. Discus 3310.14 mSame hull familyNear-identical lengthAn aft-cockpit evolution of the Westerly 33, featuring a masthead rig and the choice of fin or twin keels
Endeavour 3310.06 mSame hull familyNear-identical lengthA shoal-draft masthead sloop with a fin keel and spade rudder, designed by Bruce Kelley for coastal cruising

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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Nothing filmed of this one yet

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