BoatsWavelength 30

Wavelength 30

Masthead Sloop · Fin keel, spade rudder · 1980–1981

A short-lived 1980s production run of a fin-keeled masthead sloop designed for high-performance club racing

Designed by Paul Lindenberg, built by W. D. Schock Corp.

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 light displacement on a moderate beam gives 18 — a quick, lively motion that feels every wave.

Comfort ratio 18
CoastalBluewater

2.09 — right around the 2.0 line, the edge between coastal and offshore.

Capsize screening 2.09
LightHeavy

163 — light for her waterline, so she is easily driven and quick to accelerate.

Displacement / length 163
EasygoingPowered-up

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

Sail area / displacement 19.5
TenderStiff

44% of her weight is ballast — stiff, standing up well to her sails.

Ballast 44%

Light and lively — happiest day-sailing and coastal-hopping in settled weather.

The record

Full specifications

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

Dimensions
Weights
Ballast / displacement
44.3%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
19.5
Displacement / length
163.3
Comfort ratio
18.2
Capsize screening
2.09
Hull speed
6.9 kn
Pounds / inch immersion
956
Hull
Hull type
Fin w/spade rudder
Construction
Fiberglass
Production
Years built
1980–1981
Units built
10
Designer
Paul Lindenberg
Builder
W. D. Schock Corp, Schock W.D

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.

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
Bavaria Yachts 3009.55 mSame hull family0.4 m longerA 9.55-metre fractional sloop from 1989, featuring a deep 1.65-metre fin keel and bulb for efficient coastal sailing
Jeanneau Rush 319.13 mSame hull familyNear-identical lengthA Ron Holland-designed IOR half-tonner that served as the official boat for the Tour de France à la Voile
Beneteau First 3109.45 mSame hull family0.3 m longerA 9.45-meter fractional sloop with a 1.8-meter fin keel, optimized for a light displacement of 3,199 kilograms
RM Yachts 8908.90 mSame hull family0.2 m shorterA high-performance fractional sloop with a deep bulb keel and dual rudders, optimized for speed and stability
Beneteau First 3009.05 mSame hull familyNear-identical lengthA Groupe Finot-designed fractional sloop with a high sail-area-to-displacement ratio built for spirited club racing

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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