BoatsAndercraft 36

Andercraft 36

Masthead Sloop · Fin keel, spade rudder · First built 1984

A unique masthead sloop with tooling by Westerly Marine that resulted in only a single boat ever built

Designed by Alan Andrews, built by Westerly Marine.

LOA
Beam
Draft (max)
Displacement
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 19 — a quick, lively motion that feels every wave.

Comfort ratio 19
CoastalBluewater

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

Capsize screening 2.15
LightHeavy

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

Displacement / length 173
EasygoingPowered-up

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

Sail area / displacement 21.3

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

  • Draws more than ~81% of boats her size on file

Compared with 2950 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
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
21.3
Displacement / length
172.9
Comfort ratio
19.0
Capsize screening
2.15
Hull speed
7.3 kn
Pounds / inch immersion
1260
Hull
Hull type
Fin w/spade rudder
Construction
Fiberglass
Ballast type
Lead
Production
Years built
First built 1984
Units built
1
Designer
Alan Andrews
Builder
Westerly Marine

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.

Tartan Marine 36511.13 mSame hull familyNear-identical lengthLaunched in 2020, this 11-meter cruiser pairs a high 20.56 sail-area-to-displacement ratio with a deep 1.98-meter draft
Beneteau First 34511.00 mSame hull familyNear-identical lengthA 36-foot masthead sloop from the mid-eighties, designed for offshore speed with a stiff 36% ballast ratio
Beneteau First 36.710.90 mSame hull family0.2 m shorterA Farr-designed racer-cruiser with a 2.2-metre draft and a balanced sail-area-to-displacement ratio for club competition
Hallberg-Rassy 3511.13 mSame hull familyNear-identical lengthA shallow-draft fin-keeler with a 1.3-metre draft, built for coastal cruising and ease of access to shoal anchorages
Catalina Yachts 3611.07 mSame hull familyNear-identical lengthA versatile coastal cruiser offering optional tall rig and wing keel configurations to suit varying water depths
Columbia Yachts 3610.90 mSame hull family0.2 m shorterA 1967-era masthead sloop with a 41% ballast ratio, designed for a balance of stability and coastal performance

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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