Roberts 50
Description
The Bruce Roberts 50, also known as the Canoe Stern 50, is a timeless bluewater cruising ketch designed by Australian naval architect Bruce Roberts in the 1970s, prized for its seaworthy multi-chine hull and owner-builder appeal, with hundreds constructed worldwide in fiberglass, steel, or aluminum for global voyages and charter operations. Featuring an LOA of 50 feet, LWL of 39 feet 3 inches, beam of 14 feet, draft of 6 feet 3 inches on a long fin keel, and a displacement of 41,000 pounds including substantial external ballast, this cutter-rigged ketch boasts a sail area of 1,077 square feet distributed across mainsail, mizzen, genoa, and staysail for efficient performance in 15-35 knot winds, attaining 8-10 knot hull speeds with balanced helm, augmented by a 60- to 100-horsepower diesel auxiliary like the Perkins or Yanmar series. Its elegant lines include a distinctive canoe stern, moderate clipper bow, and teak-trimmed deckhouse on a robust hand-laid or welded hull with foam core options, offering 6-foot-6-inch headroom in a voluminous interior layout for 6-8 berths, comprising a U-galley, L-settee dinette, double aft owner's cabin, forward guest stateroom, dual heads with showers, and generous tankage of 300 gallons fuel and 400 gallons water for extended self-sufficiency. Endorsed for circumnavigations and heavy-weather passages, as demonstrated by steel-hulled examples like the 2006 Aesclepius and 1989 Henry Morgan, the Roberts 50 exemplifies durable craftsmanship and liveaboard comfort, remaining a staple for adventurous sailors prioritizing safety and style on oceans from the Atlantic to the South Pacific.
Construction Details
| Designer | Bruce Roberts-Goodson |
|---|---|
| Length | 50.000 ft |
| LWL | 39.250 ft |
| Beam | 14.000 ft |
| Displacement | 41000 lb |
| Max Draft | 6.250 ft |
The standard boat dimensions
| i | 57 ft |
|---|---|
| j | 17.33 ft |
| p | 48.75 ft |
| e | 17.83 ft |
| p2 | 31.67 ft |
| e2 | 11.92 ft |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 57 ft | 17.33 ft | 48.75 ft | 17.83 ft | 31.67 ft | 11.92 ft | - | - |
Documents
Sails
Roberts 50 - MAINSAIL
| Luff | * 48.75 ft - (14859 mm) |
|---|---|
| Foot | * 17.83 ft - (5435 mm) |
| Leech | * 51.15 ft - (15591 mm) |
| Tack Angle | * 88 ° |
| Diagonal | * 51.32 ft - (15642 mm) |
| Head (inches) | * 6 in - (152 mm) |
| Area | 434.17 ft² |
| Edit in Calculator | |
Roberts 50 - JIBSAIL
| Luff | * 47.66 ft - (14527 mm) |
|---|---|
| Foot | * 22.77 ft - (6940 mm) |
| Leech | * 41.72 ft - (12716 mm) |
| Percentage LP | * 115 % |
| Length Perpendicular | * 19.93 ft - (6075 mm) |
| Deck Angle | * 12 ° |
| Area | 474.97 ft² |
| Edit in Calculator | |
Roberts 50 - GENOA
| Luff | * 56.6 ft - (17252 mm) |
|---|---|
| Foot | * 27.83 ft - (8483 mm) |
| Leech | * 53.42 ft - (16282 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 26 ft - (7925 mm) |
| Deck Angle | * 4 ° |
| Area | 735.72 ft² |
| Edit in Calculator | |
Roberts 50 - SPINNAKER
| Stays | * 56.6 ft - (17252 mm) |
|---|---|
| MidGirth | * 31.19 ft - (9507 mm) |
| Foot | * 31.19 ft - (9507 mm) |
| Perc LP | * 180 % |
| Area | 1500.55 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.