Sigma 33 OOD
Description
The Sigma 33 (specifically the popular Sigma 33 OOD – Offshore One Design version) is a successful fractional sloop cruiser-racer designed by David Thomas and built by Marine Projects Ltd. (Sigma Yachts) in Plymouth, UK, from 1978 to 1991. Approximately 364 of the standard Sigma 33 OOD were constructed (with an additional ~44 of the shorter-mast, shallower-draft "C" cruising variant for a total of over 400 across versions). It was developed as an affordable, capable offshore one-design that proved exceptionally popular for both competitive racing (including surviving the 1979 Fastnet) and fast family cruising, with many still actively sailed today in club fleets and offshore events due to its responsive handling, stability, and versatility.
Construction Details
| Designer | David Thomas |
|---|---|
| Builder | Marine Projects Ltd. (UK) |
| Length | 32.500 ft |
| LOA | 32.500 ft |
| LWL | 26.250 ft |
| Beam | 10.500 ft |
| Displacement | 9200 lb |
| Ballast | 3472 lb |
| Max Draft | 5.750 ft |
| Year Built | 1978 |
The standard boat dimensions
| i | 37.01 ft |
|---|---|
| j | 11.75 ft |
| p | 37.99 ft |
| e | 12.99 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 37.01 ft | 11.75 ft | 37.99 ft | 12.99 ft | - | - | - | - |
Sails
Sigma 33 OOD - MAINSAIL
| Luff | * 37.99 ft - (11579 mm) |
|---|---|
| Foot | * 12.99 ft - (3959 mm) |
| Leech | * 39.56 ft - (12058 mm) |
| Tack Angle | * 88.01 ° |
| Diagonal | * 39.72 ft - (12107 mm) |
| Head (inches) | * 6 in - (152 mm) |
| Area | 246.47 ft² |
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Sigma 33 OOD - JIBSAIL
| Luff | * 31.06 ft - (9467 mm) |
|---|---|
| Foot | * 15.54 ft - (4737 mm) |
| Leech | * 27 ft - (8230 mm) |
| Percentage LP | * 115 % |
| Length Perpendicular | * 13.51 ft - (4118 mm) |
| Deck Angle | * 12 ° |
| Area | 209.79 ft² |
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Sigma 33 OOD - GENOA
| Luff | * 36.89 ft - (11244 mm) |
|---|---|
| Foot | * 18.96 ft - (5779 mm) |
| Leech | * 34.71 ft - (10580 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 17.63 ft - (5374 mm) |
| Deck Angle | * 4 ° |
| Area | 325.1 ft² |
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Sigma 33 OOD - SPINNAKER
| Stays | * 36.89 ft - (11244 mm) |
|---|---|
| MidGirth | * 21.15 ft - (6447 mm) |
| Foot | * 21.15 ft - (6447 mm) |
| Perc LP | * 180 % |
| Area | 663.19 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.
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