BoatsAlo Yachts 33

Alo Yachts 33

Masthead Sloop · Fin With Rudder On Skeg · 1975–1980

An IOR 3/4 ton racer from the late 1970s, configured as a masthead sloop with a fin keel and skeg-hung rudder

Designed by Jan Bjerke & Alf Ortang.

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 28 — a moderate, middle-of-the-road motion.

Comfort ratio 28
CoastalBluewater

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

Capsize screening 1.85
LightHeavy

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

Displacement / length 324
EasygoingPowered-up

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

Sail area / displacement 15.1
TenderStiff

39% of her weight is ballast — moderately stiff, a middle-of-the-road stability.

Ballast 39%

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
38.8%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
15.1
Displacement / length
323.6
Comfort ratio
28.0
Capsize screening
1.85
Hull speed
6.7 kn
Pounds / inch immersion
897
Hull
Hull type
Fin with rudder on skeg
Construction
Fiberglass
Ballast type
Iron
Production
Years built
1975–1980
Units built
45
Designer
Jan Bjerke, Alf Ortang
Builder
Alo Yachts

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.

Endeavour 329.75 mSame hull family0.2 m shorterEndeavour's debut model, this masthead sloop evolved from the Irwin 32 hull into a stable, shoal-draft cruiser
Contessa 329.75 mSame hull family0.2 m shorterA 1973 London Boat Show winner with a skeg-hung rudder and a ballast-to-displacement ratio of 47 percent
Islander 329.91 mSame hull familyNear-identical lengthA J.H. McGlasson-designed masthead sloop that served as the foundational hull for the later Islander 33 and 34 models
Hunter Marine 339.96 mSame hull familyNear-identical lengthA 1977 masthead sloop with a 38% ballast ratio, designed for stability and coastal performance
Moody 3410.19 mSame hull family0.2 m longerA 1980s mid-sized cruiser with a 40% ballast ratio, designed for stability and predictable handling in coastal waters
Cal Boats 3410.13 mSame hull family0.2 m longerA masthead sloop with a fin keel and spade rudder, favored by Jensen Marine founder Jack Jensen for personal 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.

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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