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 |
The standard boat dimensions
| i | 43 ft |
|---|---|
| j | 14 ft |
| p | 38 ft |
| e | 11.75 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 43 ft | 14 ft | 38 ft | 11.75 ft | - | - | - | - |
Documents
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 |
| Edit in Calculator | |
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 |
| Edit in Calculator | |
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 |
| Edit in Calculator | |
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 |
| Edit in Calculator | |
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 |
| Edit in Calculator | |
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 |
| Edit in Calculator | |
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 |
| Edit in Calculator | |
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 |
| Edit in Calculator | |
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 |
| Edit in Calculator | |
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 |
| Edit in Calculator | |
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 |
| Edit in Calculator | |
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 |
| Edit in Calculator | |
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.