Irwin Competition 37
Description
The Irwin Competition 37 (built only 1981–1982, approximately 25 hulls) was Ted Irwin’s short-lived attempt to inject real performance into the famously roomy Irwin 37 platform. Essentially a Mark V hull with a radically different deck, rig, and underbody, the Competition 37 swapped the center-cockpit cruiser layout for a low-profile flush deck, a tall fractional sloop rig (SA/D ~19–20), and a deep fin keel (6′6″ draft) with a balanced spade rudder. Displacement dropped to around 17,500 lbs with roughly 7,800 lbs of lead low in the fin, giving it a much higher ballast ratio (~44%) and dramatically stiffer, quicker motion than any previous Irwin 37. Below decks, the interior is surprisingly still quite livable for a performance-oriented boat—private aft cabin, big galley, and saloon—but headroom is reduced in places, and the finish is simpler to save weight. On the water it is easily the best-performing Irwin 37 variant: excellent upwind (points higher and faster than most IOR-era boats of similar length), responsive helm, and capable of sustained 7+ knot passage averages. Rare, quirky, and polarizing (cruisers think it’s too stripped-out, racers think it’s too heavy), the Competition 37 remains a cult classic: an affordable, American-built 1980s “cruiser-racer” that can actually race respectably under PHRF while still offering weekend or short-offshore cruising comfort.
Construction Details
| Designer | Ted Irwin |
|---|---|
| Builder | Irwin Yachts |
| Length | 37.000 ft |
| LOA | 37.000 ft |
| LWL | 26.920 ft |
| Beam | 10.170 ft |
| Displacement | 10000 lb |
| Max Draft | 5.330 ft |
The standard boat dimensions
| i | 49 ft |
|---|---|
| j | 15.67 ft |
| p | 42.50 ft |
| e | 12 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 49 ft | 15.67 ft | 42.50 ft | 12 ft | - | - | - | - |
Sails
Irwin Competition 37 - MAINSAIL
| Luff | * 42.5 ft - (12954 mm) |
|---|---|
| Foot | * 12 ft - (3658 mm) |
| Leech | * 43.52 ft - (13265 mm) |
| Tack Angle | * 88 ° |
| Diagonal | * 43.76 ft - (13338 mm) |
| Head (inches) | * 5.25 in - (133 mm) |
| Area | * 262.83 ft² |
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Irwin Competition 37 - JIBSAIL
| Luff | * 41.16 ft - (12546 mm) |
|---|---|
| Foot | * 20.75 ft - (6325 mm) |
| Leech | * 35.75 ft - (10897 mm) |
| Percentage LP | * 115 % |
| Length Perpendicular | * 18.02 ft - (5492 mm) |
| Deck Angle | * 11.98 ° |
| Area | * 370.89 ft² |
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Irwin Competition 37 - GENOA
| Luff | * 48.87 ft - (14896 mm) |
|---|---|
| Foot | * 25.3 ft - (7711 mm) |
| Leech | * 45.96 ft - (14009 mm) |
| Percentage LP | * 149.97 % |
| Length Perpendicular | * 23.5 ft - (7163 mm) |
| Deck Angle | * 4.01 ° |
| Area | * 574.22 ft² |
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Irwin Competition 37 - GENOA
| Luff | 47.83 ft - (14579 mm) |
|---|---|
| Foot | 21.167 ft - (6452 mm) |
| Leech | 44.42 ft - (13539 mm) |
| Percentage LP | * 125.14 % |
| Length Perpendicular | * 19.61 ft - (5977 mm) |
| Deck Angle | * 4.39 ° |
| Area | * 468.93 ft² |
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Irwin Competition 37 - ASYMMETRICAL
| Luff | * 48.87 ft - (14896 mm) |
|---|---|
| Foot | * 25.86 ft - (7882 mm) |
| Leech | * 44.96 ft - (13704 mm) |
| Perc LP | * 165 % |
| Area | * 948 ft² |
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Irwin Competition 37 - SPINNAKER
| Stays | * 48.87 ft - (14896 mm) |
|---|---|
| MidGirth | * 28.21 ft - (8598 mm) |
| Foot | * 28.21 ft - (8598 mm) |
| Perc LP | * 180 % |
| Area | * 1172 ft² |
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Irwin Competition 37 - STORMJIB
| Luff | * 28.29 ft - (8623 mm) |
|---|---|
| Foot | * 11.73 ft - (3575 mm) |
| Leech | * 23.26 ft - (7090 mm) |
| Perc LP | * 59.99 % |
| Length Perp | * 9.4 ft - (2865 mm) |
| Deck Angle | * 18.99 ° |
| Area | * 132.98 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.