BoatsIrwin Yachts 33 MKII

Irwin Yachts 33 MKII

Masthead Sloop · Fin keel, spade rudder · First built 1976

A Ted Irwin-designed masthead sloop with a fin keel and spade rudder that saw competition at the IOR 3/4 ton level

Designed by Ted Irwin.

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

Comfort ratio 25
CoastalBluewater

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

Capsize screening 1.96
LightHeavy

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

Displacement / length 257
EasygoingPowered-up

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

Sail area / displacement 15.0
TenderStiff

35% of her weight is ballast — moderately stiff, a middle-of-the-road stability.

Ballast 35%

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
35.1%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
15.0
Displacement / length
256.5
Comfort ratio
25.5
Capsize screening
1.96
Hull speed
7.0 kn
Pounds / inch immersion
1098
Hull
Hull type
Fin w/spade rudder
Construction
Fiberglass
Production
Years built
First built 1976
Designer
Ted Irwin
Builder
Irwin 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.

Seidelmann Yachts 3410.36 mSame hull family0.3 m longerA 1981 masthead sloop with a 45% ballast ratio, balancing a light-displacement hull with a deep 1.65-metre fin keel
Hunter Marine 339.96 mSame hull familyNear-identical lengthA 1977 masthead sloop with a 38% ballast ratio, designed for stability and coastal performance
Bavaria Yachts Cruiser 339.99 mSame hull familyNear-identical lengthOriginally introduced as the Cruiser 32, this 9.99-metre fractional sloop offers a 1.95-metre draft for coastal sailing
Westerly 3310.14 mSame hull familyNear-identical lengthA center-cockpit masthead sloop offered with fin or bilge keels, designed for stable cruising and long-range comfort
Cal Boats 3410.13 mSame hull familyNear-identical lengthA masthead sloop with a fin keel and spade rudder, favoured by Jensen Marine founder Jack Jensen for personal cruising
Islander 329.91 mSame hull family0.2 m shorterA J.H. McGlasson-designed masthead sloop that served as the foundational hull for the later Islander 33 and 34 models

The family

Boats like this

Nearby designs by size, type, and era — worth a look alongside her.

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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