BoatsAquafibre Pj-34

Aquafibre Pj-34

Masthead Sloop · Fin With Rudder On Skeg · First built 1970

A Sparkman & Stephens design identical to the legendary S&S 34, featuring a masthead rig and a skeg-mounted 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

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

Displacement / length 411
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
411.0
Comfort ratio
34.3
Capsize screening
1.72
Hull speed
6.6 kn
Pounds / inch immersion
871
Hull
Hull type
Fin with rudder on skeg
Construction
Fiberglass
Production
Years built
First built 1970
Designer
Sparkman, Stephens
Builder
Aquafibre

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.

Pacific Seacraft 3410.39 mSame hull family0.2 m longerA William Crealock-designed cutter featuring a skeg-mounted rudder and an optional shallow-draft keel for versatile cruising
Rival 3410.36 mSame hull familyNear-identical lengthA 1972 masthead sloop with a 39% ballast ratio, designed for offshore stability and a steady 6.68-knot hull speed
Victoria Marine 3410.44 mSame hull family0.2 m longerA versatile cruiser available as a masthead sloop or cutter, featuring a shallow 1.47m draft and a skeg-hung rudder
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
Seidelmann Yachts 3410.36 mSame hull familyNear-identical lengthA 1981 masthead sloop with a 45% ballast ratio, balancing a light-displacement hull with a deep 1.65-metre fin keel

The family

Boats like this

Nearby designs by size, type, and era — worth a look alongside her.

Keep looking

Nothing filmed of this one yet

Two ways to keep looking — both search what the fleet has actually recorded.

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