Bertha — ORC Rating | RegattaPages

GPH

650

OSN

628.1

LOA

10.3 m

Displacement

5231 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6178

Medium

0.8535

High

0.9916

Triple Offshore

Low

0.7967

Medium

1.0469

High

1.1787

Boat Specifications

Dimensions

Length overall: 10.3 m
Beam: 3.48 m
Draft: 1.93 m
Displacement: 5231 kg
Crew weight: 610 kg
Wetted surface: 24.94 m²

Sails

Mainsail: 31.24 m²
Genoa: 32.48 m²
Spinnaker: 78.34 m²
Asymmetric spinnaker: 0 m²

Design

Type: Dufour 34 Standard
Builder: Dufour
Designer: Umberto Felici
Year built: 2002
Stability index: 116.3

Velocity Prediction

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into WX Navigator or compatible navigation software.

6,43.8,4.5583,52,5.05,60,5.33,75,5.5,90,5.38,110,5.34,120,5.18,135,4.67,145.1,4.133381,150,3.91
8,41.8,5.379113,52,5.99,60,6.24,75,6.4,90,6.33,110,6.46,120,6.31,135,5.8,149.6,5.031804,150,5.01
10,40.2,5.943995,52,6.58,60,6.77,75,6.92,90,6.97,110,7.1,120,7.02,135,6.66,150,5.97,151.4,5.888497
12,38.8,6.274556,52,6.92,60,7.09,75,7.23,90,7.32,110,7.5,120,7.45,135,7.18,150,6.72,157.2,6.41093
14,38.2,6.426106,52,7.1,60,7.28,75,7.46,90,7.51,110,7.85,120,7.82,135,7.57,150,7.19,168.2,6.640327
16,38.2,6.515181,52,7.19,60,7.38,75,7.65,90,7.75,110,8.14,120,8.19,135,7.95,150,7.55,177.2,7.008367
20,38.4,6.584207,52,7.26,60,7.48,75,7.86,90,8.15,110,8.54,120,8.87,135,8.74,150,8.26,179,7.701173

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.05	5.33	5.5	5.38	5.34	5.18	4.67	3.91
8	5.99	6.24	6.4	6.33	6.46	6.31	5.8	5.01
10	6.58	6.77	6.92	6.97	7.1	7.02	6.66	5.97
12	6.92	7.09	7.23	7.32	7.5	7.45	7.18	6.72
14	7.1	7.28	7.46	7.51	7.85	7.82	7.57	7.19
16	7.19	7.38	7.65	7.75	8.14	8.19	7.95	7.55
20	7.26	7.48	7.86	8.15	8.54	8.87	8.74	8.26

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.8°	3.29	145.1°	3.39
8	41.8°	4.01	149.6°	4.34
10	40.2°	4.54	151.4°	5.17
12	38.8°	4.89	157.2°	5.91
14	38.2°	5.05	168.2°	6.5
16	38.2°	5.12	177.2°	7
20	38.4°	5.16	179°	7.7

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