O'Day 34

Description

The O'Day 34 is an American-built racer-cruiser sailboat designed by C. Raymond Hunt Associates (with John Deknatel) and first produced in 1978 by O'Day Corp. in Fall River, Massachusetts, as a spacious evolution of the O'Day 30 emphasizing balanced performance for coastal cruising or club racing, generous liveaboard accommodations, and forgiving seaworthiness with an average PHRF handicap around 150 signaling solid speed potential. Constructed from balsa-cored fiberglass with a fin keel and spade rudder for responsive handling (standard 4.92-foot draft or optional shoal 4-foot wing keel), it displaces 11,500 pounds with 4,300 pounds of encapsulated lead ballast, measures 34 feet LOA, 28 feet LWL, and 11 feet beam, achieving a hull speed of 7.0 knots and approximately 550 square feet of sail area under its standard masthead sloop rig powered by a reliable 27 HP Yanmar 3GM30F diesel inboard with 25 gallons of fuel and 40 gallons of water capacity. Renowned for its moderate displacement/length ratio of 216 and sail area/displacement ratio of 16 enabling respectable upwind ability in moderate winds, bright teak-trimmed interior boasting 6'2" headroom across two private cabins (V-berth forward and aft double), U-shaped galley, nav station, enclosed head with shower, and convertible saloon sleeping up to six, plus wheel steering and a walkthrough transom for cockpit ease, the O'Day 34 was produced through 1984 with around 250 units built before evolving into the O'Day 35 with a minor transom extension, enduring as an affordable, low-maintenance classic for sailors valuing Hunt's elegant lines, forgiving stability, and surprising volume in a mid-30s package.

Construction Details

Designer C. Raymond Hunt Associates
Builder O'Day Corp.
Length 34.000 ft
LOA 34.000 ft
LWL 28.750 ft
Beam 11.250 ft
Displacement 11500 lb
Max Draft 5.580 ft
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The standard boat dimensions

i 43 ft
j 14 ft
p 38 ft
e 11.75 ft
p2 -
e2 -
i2 -
j2 -

Sails

O'Day 34 - MAINSAIL

Luff * 38 ft - (11582 mm)
Foot * 11.75 ft - (3581 mm)
Leech * 39.14 ft - (11930 mm)
Tack Angle * 88 °
Diagonal * 39.38 ft - (12003 mm)
Head (inches) * 5.25 in - (133 mm)
Area * 230.29 ft²
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O'Day 34 - JIBSAIL

Luff 41.25 ft - (12573 mm)
Foot 16.5 ft - (5029 mm)
Leech 38.5 ft - (11735 mm)
Percentage LP * 109.93 %
Length Perpendicular * 15.39 ft - (4691 mm)
Deck Angle * 3.13 °
Area * 317.35 ft²
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O'Day 34 - JIBSAIL

Luff 38.5 ft - (11735 mm)
Foot 17 ft - (5182 mm)
Leech 34.83 ft - (10616 mm)
Percentage LP * 109.86 %
Length Perpendicular * 15.38 ft - (4688 mm)
Deck Angle * 7.2 °
Area * 296.01 ft²
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O'Day 34 - JIBSAIL

Luff 39 ft - (11887 mm)
Foot 18.5 ft - (5639 mm)
Leech 35.5 ft - (10820 mm)
Percentage LP * 120.07 %
Length Perpendicular * 16.81 ft - (5124 mm)
Deck Angle * 6.67 °
Area * 327.74 ft²
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O'Day 34 - JIBSAIL

Luff 43.75 ft - (13335 mm)
Foot 17.5 ft - (5334 mm)
Leech 40.5 ft - (12344 mm)
Percentage LP * 115.71 %
Length Perpendicular * 16.2 ft - (4938 mm)
Deck Angle * 4.23 °
Area * 354.28 ft²
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O'Day 34 - GENOA

Luff 42 ft - (12802 mm)
Foot 22.67 ft - (6910 mm)
Leech 39.5 ft - (12040 mm)
Percentage LP * 150 %
Length Perpendicular * 21 ft - (6401 mm)
Deck Angle * 4.11 °
Area * 440.97 ft²
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O'Day 34 - GENOA

Luff 42.92 ft - (13082 mm)
Foot 22.5 ft - (6858 mm)
Leech 40.67 ft - (12396 mm)
Percentage LP * 150 %
Length Perpendicular * 21 ft - (6401 mm)
Deck Angle * 3.03 °
Area * 450.57 ft²
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O'Day 34 - GENOA

Luff 42 ft - (12802 mm)
Foot 21.33 ft - (6501 mm)
Leech 39 ft - (11887 mm)
Percentage LP * 140.36 %
Length Perpendicular * 19.65 ft - (5989 mm)
Deck Angle * 4.89 °
Area * 412.55 ft²
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O'Day 34 - GENOA

Luff 41.75 ft - (12725 mm)
Foot 19.75 ft - (6020 mm)
Leech 38.75 ft - (11811 mm)
Percentage LP * 130.29 %
Length Perpendicular * 18.24 ft - (5560 mm)
Deck Angle * 4.48 °
Area * 380.85 ft²
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O'Day 34 - ASYMMETRICAL

Luff * 42.96 ft - (13094 mm)
Foot * 23.1 ft - (7041 mm)
Leech * 39.52 ft - (12046 mm)
Perc LP * 165 %
Area * 744 ft²
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O'Day 34 - SPINNAKER

Stays * 42.96 ft - (13094 mm)
MidGirth * 25.2 ft - (7681 mm)
Foot * 25.2 ft - (7681 mm)
Perc LP * 180 %
Area * 920 ft²
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O'Day 34 - STORMJIB

Luff * 24.87 ft - (7580 mm)
Foot * 10.52 ft - (3206 mm)
Leech 19 ft - (5791 mm)
Perc LP * 53.43 %
Length Perp * 7.48 ft - (2280 mm)
Deck Angle * 26.69 °
Area * 92.95 ft²
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Disclaimer. Boats are not all the same -- even when produced in the same factory of the same model. Sailrite does its best to publish accurate dimensions, but we often find it worthwhile to have our customers measure their boats carefully before we produce kits for them. You should take the same precautions, especially when the data is not from Sailrite. The information on this site is not guaranteed to be accurate. Sailrite offers this content as a service to our community, but takes no responsibility for the reliability of the data provided.

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