BoatsSwarbrick Brothers S&s 30

Swarbrick Brothers S&s 30

Masthead Sloop · Fin With Rudder On Skeg · First built 1971

A Sparkman & Stephens design #1999-C1 masthead sloop, sharing its lineage with the Yankee 30.

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 narrow beam gives 29 — a moderate, middle-of-the-road motion.

Comfort ratio 29
CoastalBluewater

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

Capsize screening 1.75
LightHeavy

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

Displacement / length 319
EasygoingPowered-up

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

Sail area / displacement 16.6
TenderStiff

47% of her weight is ballast — stiff, standing up well to her sails.

Ballast 47%

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

  • Narrower than ~75% of boats her size on file

Compared with 2528 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
47.5%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
16.6
Displacement / length
319.2
Comfort ratio
28.7
Capsize screening
1.75
Hull speed
6.4 kn
Pounds / inch immersion
740
Hull
Hull type
Fin with rudder on skeg
Construction
Fiberglass
Production
Years built
First built 1971
Units built
12
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.

Contessa 329.75 mSame hull family0.6 m longerA 1973 London Boat Show winner with a skeg-hung rudder and a ballast-to-displacement ratio of 47 percent
Dufour Arpege 309.14 mSame hull familyNear-identical lengthA 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 family0.4 m shorterA 1970s masthead sloop with a 1.32-meter draft and a 45% ballast ratio, balancing coastal stability with shoal access
Cal Boats 309.14 mSame hull familyNear-identical lengthOffered with an optional tall rig, this masthead sloop served as the predecessor to the 2-30 series
Catalina Yachts 309.12 mSame hull familyNear-identical lengthOne of the most successful production yachts in history, with over 6,000 hulls built during a 32-year run
Maxi Yachts 959.50 mSame hull family0.3 m longerA 9.5-metre masthead sloop produced for a decade, featuring a skeg-hung rudder for predictable coastal handling

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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