BoatsPj-30 1/2 Ton

Pj-30 1/2 Ton

Masthead Sloop · Fin With Rudder On Skeg · First built 1973

A Sparkman & Stephens IOR half-tonner designed for competitive racing and also marketed as the North Star 1000

Designed by Sparkman & Stephens, built by Hughes Boat Works 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 heavy displacement on a moderate beam gives 25 — a moderate, middle-of-the-road motion.

Comfort ratio 25
CoastalBluewater

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

Capsize screening 1.90
LightHeavy

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

Displacement / length 307
EasygoingPowered-up

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

Sail area / displacement 16.0
TenderStiff

46% of her weight is ballast — stiff, standing up well to her sails.

Ballast 46%

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

The record

Full specifications

The complete reference set — tap any figure to switch between metric and imperial.

Dimensions
Weights
Ballast / displacement
46.4%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
16.0
Displacement / length
306.5
Comfort ratio
24.8
Capsize screening
1.90
Hull speed
6.4 kn
Pounds / inch immersion
770
Hull
Hull type
Fin with rudder on skeg
Construction
Fiberglass
Production
Years built
First built 1973
Designer
Sparkman, Stephens
Builder
Hughes Boat Works 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.

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
Spirit 329.48 mSame hull family0.4 m longerA Jacques De Ridder-designed IOR 23-footer built for nearly two decades as a stiff, masthead-rigged fin-keel sloop
Tartan Marine 309.12 mSame hull familyNear-identical lengthA Sparkman & Stephens masthead sloop offering versatile interior configurations and a choice of standard or tall rigs
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
Dufour Yachts 319.40 mSame hull family0.3 m longerA 1973 masthead sloop featuring a skeg-mounted rudder and a comfortable, stable design 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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