Nelson Marek 41 IOR Masthead Rig
Description
The Nelson Marek 41 IOR Masthead Rig (also known as the Nelson/Marek 41 IOR Masthead or closely related to the Serendipity 41 / Geraghty 41) is a classic early-1980s American IOR (International Offshore Rule) racing sailboat designed by Nelson/Marek Yacht Design (Bruce Nelson and Bruce Marek) in San Diego, California. Built primarily in limited custom or semi-custom runs (e.g., by Geraghty Marine around 1981–1982; some sources link it to the Serendipity 41 production variant), with very low numbers overall (likely under a dozen hulls across close variants, based on rarity in markets and historical mentions), it features lightweight fiberglass/composite construction, a fin keel with spade rudder for speed and maneuverability, masthead sloop rig optimized for IOR 2-Ton rating (around 32.0 IOR), and a focus on competitive offshore/buoy racing performance—proven in events like Mackinac races, with a reputation for strong light-air capability from its generous sail plan, though more race-oriented than comfortable cruiser.
Construction Details
| Designer | Nelson/Marek |
|---|---|
| Builder | Geraghty Marine (San Diego) |
| Length | 41.000 ft |
| LOA | 41.000 ft |
| LWL | 32.500 ft |
| Beam | 13.000 ft |
| Displacement | 18000 lb |
| Max Draft | 7.000 ft |
| Year Built | 1981 |
The standard boat dimensions
| i | 55.25 ft |
|---|---|
| j | 17.25 ft |
| p | 48.75 ft |
| e | 13.37 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 55.25 ft | 17.25 ft | 48.75 ft | 13.37 ft | - | - | - | - |
Sails
Nelson Marek 41 IOR Masthead Rig - MAINSAIL
| Luff | * 48.75 ft - (14859 mm) |
|---|---|
| Foot | * 13.37 ft - (4075 mm) |
| Leech | * 49.97 ft - (15231 mm) |
| Tack Angle | * 88.01 ° |
| Diagonal | * 50.1 ft - (15270 mm) |
| Head (inches) | * 6 in - (152 mm) |
| Area | 325.57 ft² |
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Nelson Marek 41 IOR Masthead Rig - JIBSAIL
| Luff | * 46.3 ft - (14112 mm) |
|---|---|
| Foot | * 22.76 ft - (6937 mm) |
| Leech | * 40.36 ft - (12302 mm) |
| Percentage LP | * 115 % |
| Length Perpendicular | * 19.84 ft - (6047 mm) |
| Deck Angle | * 12 ° |
| Area | 459.3 ft² |
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Nelson Marek 41 IOR Masthead Rig - GENOA
| Luff | * 54.99 ft - (16761 mm) |
|---|---|
| Foot | * 27.78 ft - (8467 mm) |
| Leech | * 51.81 ft - (15792 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 25.88 ft - (7888 mm) |
| Deck Angle | * 4 ° |
| Area | 711.49 ft² |
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Nelson Marek 41 IOR Masthead Rig - SPINNAKER
| Stays | * 54.99 ft - (16761 mm) |
|---|---|
| MidGirth | * 31.05 ft - (9464 mm) |
| Foot | * 31.05 ft - (9464 mm) |
| Perc LP | * 180 % |
| Area | 1451.32 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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