BoatsO'day 30

O'day 30

Masthead Sloop · Fin keel, spade rudder · 1977–1984

A 9.12-metre masthead sloop with a fin keel and spade rudder, later evolved into the O'Day 31

Designed by Hunt, Associates, Raymond Hunt (C. R. Hunt & Assoc.).

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Fin w/spade Rudder

See her sail

The O'day 30, on the water

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

Footage from Practical Sailor

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 beamy beam gives 26 — a moderate, middle-of-the-road motion.

Comfort ratio 26
CoastalBluewater

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

Capsize screening 1.97
LightHeavy

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

Displacement / length 285
EasygoingPowered-up

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

Sail area / displacement 14.8
TenderStiff

40% of her weight is ballast — moderately stiff, a middle-of-the-road stability.

Ballast 40%

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

What the fleet has seen

The O'day 30, as the fleet has seen it

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

The O'day 30 is a masthead sloop designed by Hunt Associates (Raymond Hunt) and built by O'Day Corp. between 1977 and 1984.7:17 It measures 9.1 meters LOA with a 3.3-meter beam and 1.5-meter draft, displacing 4762 kg. The hull features a fin with a spade rudder. A keel/centerboard model was also available, offering a draft of 2.19 meters with the board down and 1.07 meters with it up. The O'day 30 was later reintroduced with an extended stern as the O'day 31 in 1985.7:17

The living fleet

Sailed by the fleet

Where the fleet has filmed this boat.

Basemap © Wikimedia Commons · CC BY-SA 4.0

On the water

The O'day 30 on video

The record

Full specifications

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

Dimensions
Weights
Ballast / displacement
40.0%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
14.8
Displacement / length
285.4
Comfort ratio
25.6
Capsize screening
1.97
Hull speed
6.8 kn
Pounds / inch immersion
976
Hull
Hull type
Fin w/spade rudder
Construction
Fiberglass
Ballast type
Lead
Production
Years built
1977–1984
Units built
356
Designer
Hunt, Associates, Raymond Hunt (C.R. Hunt, Assoc.)
Builder
O'Day Corp, Bangor Punta Corp

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.

Catalina Yachts 309.12 mSame hull familyNear-identical lengthWith over 6,000 hulls produced, this versatile masthead sloop remains one of the most successful production yachts ever built
Best 30ft Sailboat to Buy? Catalina 30 Walkthrough & Review - Ep 349 - Lady K Sailing0:45from Lady K Sailing
Cal Boats 309.14 mSame hull familyNear-identical lengthOffered with an optional tall rig, this masthead sloop served as the predecessor to the 2-30 series
Left a multinational, house, and car to live on a 30-foot sailboat | #SAL Clip #1451:32from Hashtag Sal
Tartan Marine 309.12 mSame hull familyNear-identical lengthA Sparkman & Stephens masthead sloop offering versatile interior configurations and a choice of standard or tall rigs
SUPER LOW BUDGET CRUSIING - Ep 236 - Lady K Sailing4:07from Lady K Sailing
Dufour Yachts 319.40 mSame hull family0.3 m longerA 1973 masthead sloop featuring a skeg-mounted rudder and a comfortable, stable design for coastal cruising
The Perfect Affordable Cruising Boat? (Dufour 31)2:19from Untide
Nonsuch 309.24 mSame hull familyNear-identical lengthA 30-foot cruiser with a 43% ballast ratio, offering a stable and stiff platform for coastal cruising
The Sailboat With No Wires Holding Up the Mastfrom Lady K Sailing
Cal 2-298.84 mSame hull family0.3 m shorterAn upgraded cruising variant of the standard 29, featuring enhanced equipment and a masthead rig
🛑 © 2025 BOAT AUCTION! BUY CHEAP SAILBOATS & POWER BOATS!1:03from Sailing Solé

The family

Boats like this

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

O'day 31A C. Raymond Hunt-designed masthead sloop offering a refined, extended evolution of the Ranger 30 platformO'day 28A versatile C. Raymond Hunt design offered with multiple keel and rig configurations for varied coastal cruising needsO'day 32A 9.6-metre masthead sloop with a deep-draft keel-centreboard configuration designed for versatile coastal cruisingO'day 280A masthead sloop featuring a shallow-draft wing keel designed by C. Raymond Hunt for stable coastal cruisingO'day 25A successful decade-long production run defines this 25-foot masthead sloop, built with a versatile keel-centreboardO'day 20A masthead sloop with a keel-centerboard configuration, offering a stable 5.57-knot hull speed for coastal cruising

Keep asking

The fleet has more to say

Search what's been said about the O'day 30, or ask a specific question — the answer comes back written out, with links to the moments it draws on.

Search the fleet for boats like thisAsk the fleet about the O'day 30

The newsletter

New boats, new stories. Every week, everywhere.

One email from the fleet — boats newly added, videos newly analysed. No noise.

Report an issue