BoatsIrwin Yachts 37-1

Irwin Yachts 37-1

Masthead Sloop · Fin With Rudder On Skeg · 1971–1975

A masthead sloop designed by Ted Irwin as a no-compromise cruiser, featuring a fin keel and skeg-mounted rudder

Designed by Ted Irwin.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Fin With Rudder On Skeg

See her sail

The Irwin Yachts 37-1, on the water

The fleet's own footage — the truest look at how she really moves.

Footage from Lady K Sailing

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 34 — a sea-kindly motion in a seaway.

Comfort ratio 34
CoastalBluewater

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

Capsize screening 1.76
LightHeavy

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

Displacement / length 298
EasygoingPowered-up

13.1 — modest power for her weight; easygoing rather than lively, and happier with a breeze.

Sail area / displacement 13.1
TenderStiff

37% of her weight is ballast — moderately stiff, a middle-of-the-road stability.

Ballast 37%

A capable cruiser that sits just inside the offshore line — coastal work with real passages in her.

  • Heavier than ~75% of boats her size on file

Compared with 2964 boats of the same type within a quarter of her length.

What the fleet has seen

The Irwin Yachts 37-1, as the fleet has seen it

Derived from the videos the fleet has analysed of this model. ▶ marks open the moment aboard.

The Irwin Yachts 37-1 is a Masthead Sloop designed by Ted Irwin and built by Irwin Yachts from 1971 to 1975, part of a successful series that sold nearly 600 units through 1982. This 11.3-meter cruising sailboat features a fin keel with a rudder on a skeg, a 3.5-meter beam, and a 1.7-meter draft, displacing 8164 kg.4:35 It was offered with various rig options, including sloop, cutter, or ketch, and could be powered by a 50 HP Perkins 4-108 engine.4:45 Later iterations, starting with the 37-2 in 1976, added a bowsprit.3:58 Aboard Lady K Sailing, the Irwin 37 is identified as a suitable, budget-friendly option for coastal cruising to destinations like the Bahamas, offering reliable interior space.4:03 Wicked Salty considered the Irwin 37 among several used sailboats for liveaboard potential, evaluating its interior layout, storage, and engine accessibility.1:51

The living fleet

Sailed by the fleet

Where the fleet has filmed this boat.

Seen 2 times across 2 channels of the fleet.

Basemap © Wikimedia Commons · CC BY-SA 4.0

On the water

The Irwin Yachts 37-1 on video

What they go for

Market signal

Where the fleet has seen this model for sale, and the asking prices that came with it.

1seen for sale
1channel weighed buying one
US$25,000Median asking

  • Example boat for sale in Florida, presented as a budget option for the Bahamas trip

    from Lady K Sailingseen April 20255:32

From the fleet's own footage — our observed signal, not broker listings.

The record

Full specifications

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

Dimensions
Weights
Ballast / displacement
37.2%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
13.1
Displacement / length
297.6
Comfort ratio
33.5
Capsize screening
1.76
Hull speed
7.3 kn
Pounds / inch immersion
1233
Hull
Hull type
Fin with rudder on skeg
Construction
Fiberglass
Production
Years built
1971–1975
Designer
Ted Irwin
Builder
Irwin Yachts

Boats like this, on the water

More boats like her, on the water

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.

Hunter Marine 3711.28 mSame hull familyNear-identical lengthA John E. Cherubini-designed cutter featuring a fin keel and spade rudder, built for stable cruising since 1978
The Plunge - Sailing | S12E100:07from Sailing Miss Lone Star
Rustler Yachts 3711.28 mSame hull familyNear-identical lengthA masthead sloop with a fin keel and skeg-hung rudder, designed by Stephen Jones for modern offshore cruising
Rustler 37 - A Yacht Delivery from Falmouth to Largs9:48from Halcyon Yachts - International Yacht Delivery
Endeavour 3711.28 mSame hull familyNear-identical lengthA masthead sloop born from a lengthened Creekmore 34 hull, offering a stable, comfortable platform for coastal cruising
WORST Sailboats to Buy in 20258:48from Be The Captain
Pacific Seacraft 3711.25 mSame hull familyNear-identical lengthOriginally launched as the Crealock 37, this cutter features a 38% ballast ratio and a hull speed of 7.06 knots
Sailing to Sydney Harbour + First Solo Sail on my New Boat16:05from Garrett’s Adventure
Nauticat 3711.23 mSame hull familyNear-identical lengthA 1.85m draft fin-keel masthead sloop built since 2002, offering a stable and comfortable platform for coastal cruising
[OFF MARKET] Nauticat 37 (NIRVANA) - Yacht for Sale - High-Quality Cruisingfrom Berthon International
Hunter Marine 37.5 Legend11.28 mSame hull familyNear-identical lengthA fractional sloop designed for coastal cruising, balancing a stable 36% ballast ratio with a shallow 1.45m draft
DON'T buy a HUNTER.. Everything you need to know - Ep 109 - Lady K Sailing0:50from Lady K Sailing

The family

Boats like this

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

Irwin Yachts 37-3A Ted Irwin-designed cutter with a shoal-draft fin keel, built for comfortable cruising in shallow coastal watersIrwin Yachts 37-5The final iteration of the popular Irwin 37 series, this cutter features a shoal-draft fin keel and skeg-hung rudderIrwin Yachts 38-1A 1970 masthead sloop featuring a deep-draft keel-centerboard configuration and a spade rudder for shoal-water versatility

Keep asking

The fleet has more to say

Search what's been said about the Irwin Yachts 37-1, or ask a specific question — the answer comes back written out, with links to the moments it draws on.

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