BoatsHb 31

Hb 31

Fractional Sloop · Fin keel, spade rudder · 1983–1985

An IOR half-ton racer designed by E.G. van de Stadt, featuring a high sail-area-to-displacement ratio for competitive performance

Designed by van de Stadt & E. G. Van de Stadt, built by Hunter Boats.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Fin w/spade Rudder

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 moderate beam gives 14 — a quick, lively motion that feels every wave.

Comfort ratio 14
CoastalBluewater

At 2.38 she sits above the 2.0 line — beamy for her weight, and happiest coastal.

Capsize screening 2.38
LightHeavy

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

Displacement / length 187
EasygoingPowered-up

19.1 — plenty of sail for her weight; lively and quick to respond.

Sail area / displacement 19.1
TenderStiff

48% of her weight is ballast — stiff, standing up well to her sails.

Ballast 48%

Powered-up and quick to accelerate — this one likes to sail.

  • Lighter than ~76% of boats her size on file

Compared with 2599 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
48.1%
Rig & sail area
Rig
Fractional Sloop
Ratios
SA / displacement
19.1
Displacement / length
186.8
Comfort ratio
14.4
Capsize screening
2.38
Hull speed
6.5 kn
Pounds / inch immersion
885
Hull
Hull type
Fin w/spade rudder
Construction
Fiberglass
Production
Years built
1983–1985
Units built
25
Designer
van de Stadt, E. G. Van de Stadt
Builder
Hunter Boats

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.

Maestro Boats 319.30 mSame hull familyNear-identical lengthAn E.G. van de Stadt-designed IOR 1/2 ton racer with a high sail area-to-displacement ratio for spirited performance
Jeanneau Rush 319.13 mSame hull family0.2 m shorterA Ron Holland-designed IOR half-tonner that served as the official boat for the Tour de France à la Voile
X-Yachts X-959.24 mSame hull familyNear-identical lengthA Niels Jeppesen-designed IOR half-tonner with a high sail-area-to-displacement ratio and an optional taller rig
Beneteau First 3059.30 mSame hull familyNear-identical lengthA Jean Berret-designed masthead sloop offering versatile keel and rig configurations for coastal cruising
First 30 E (Beneteau - Berret)9.30 mSame hull familyNear-identical lengthA 1981 International 1/2 Ton Cup winner based on the King One design, built as a masthead sloop for competitive racing
Brresen Badebyggeri Knarr9.24 mSame hull familyNear-identical lengthA classic Erling Kristoffersen design, this narrow-beamed fractional sloop has been a competitive one-design racer since 1946

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

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

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