Roberts 392 radius chine Version B
Description
The Bruce Roberts 392 Radius Chine Version B is a versatile, heavy-displacement cruising sloop designed by Bruce Roberts-Goodson as a companion to the Roberts 39, developed in the 1980s to satisfy demand for radius chine hulls in steel or aluminum alongside round-bilge fiberglass options, emphasizing seaworthiness, ease of DIY construction, and spacious accommodations for family bluewater voyages. This Version B variant often features a raised deck for enhanced protection and visibility, distinguishing it slightly from Version A, with customizable layouts including center cockpit, aft cockpit, or two pilothouse configurations, rigged as a cutter, sloop, or ketch on short or long keels for balanced performance in varied conditions. Proven durable with hundreds built worldwide—many completing ocean crossings—it's favored for its hydrodynamic radius chine hull (24–36 inch constant curve blending multi-chine simplicity with round-bilge flow), supporting builds under $150,000–$250,000, and plans from bruceroberts.com include full-size patterns, material lists, and a 1,250-page e-book on techniques.
Construction Details
| Designer | Bruce Roberts-Goodson |
|---|---|
| Length | 39.900 ft |
| LOA | 39.900 ft |
| LWL | 34.000 ft |
| Beam | 13.000 ft |
| Displacement | 26000 lb |
| Ballast | 7500 lb |
| Max Draft | 5.750 ft |
| Min Draft | 5.250 ft |
The standard boat dimensions
| i | 60 ft |
|---|---|
| j | 16 ft |
| p | 52 ft |
| e | 16 ft |
| p2 | 38 ft |
| e2 | 11 ft |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 60 ft | 16 ft | 52 ft | 16 ft | 38 ft | 11 ft | - | - |
Documents
Sails
Roberts 392 radius chine Version B - MAINSAIL
| Luff | * 52 ft - (15850 mm) |
|---|---|
| Foot | * 16 ft - (4877 mm) |
| Leech | * 53.6 ft - (16337 mm) |
| Tack Angle | * 88 ° |
| Diagonal | * 53.87 ft - (16420 mm) |
| Head (inches) | * 6 in - (152 mm) |
| Area | * 427.06 ft² |
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Roberts 392 radius chine Version B - JIBSAIL
| Luff | * 49.68 ft - (15142 mm) |
|---|---|
| Foot | * 22.1 ft - (6736 mm) |
| Leech | * 53 ft - (16154 mm) |
| Percentage LP | * 137.81 % |
| Length Perpendicular | * 22.05 ft - (6721 mm) |
| Deck Angle | * -11.1 ° |
| Area | * 547.72 ft² |
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Roberts 392 radius chine Version B - GENOA
| Luff | * 58.99 ft - (17980 mm) |
|---|---|
| Foot | * 25.37 ft - (7733 mm) |
| Leech | * 56.15 ft - (17115 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 24 ft - (7315 mm) |
| Deck Angle | * 3.99 ° |
| Area | * 707.85 ft² |
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Roberts 392 radius chine Version B - ASYMMETRICAL
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Roberts 392 radius chine Version B - SPINNAKER
| Stays | * 58.99 ft - (17980 mm) |
|---|---|
| MidGirth | * 28.8 ft - (8778 mm) |
| Foot | * 28.8 ft - (8778 mm) |
| Perc LP | * 180 % |
| Area | * 1444 ft² |
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Roberts 392 radius chine Version B - STORMJIB
| Luff | * 34.15 ft - (10409 mm) |
|---|---|
| Foot | * 11.6 ft - (3536 mm) |
| Leech | * 35.61 ft - (10854 mm) |
| Perc LP | * 72.44 % |
| Length Perp | * 11.59 ft - (3533 mm) |
| Deck Angle | * -12.6 ° |
| Area | * 197.9 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.