Mr B — ORC Rating | RegattaPages

GPH

691.2

OSN

664.6

LOA

10.53 m

Displacement

4255 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5567

Medium

0.8018

High

0.9568

Triple Offshore

Low

0.7252

Medium

0.9963

High

1.1455

Boat Specifications

Dimensions

Length overall: 10.53 m
Beam: 3.33 m
Draft: 1.93 m
Displacement: 4255 kg
Crew weight: 650 kg
Wetted surface: 24.01 m²

Sails

Mainsail: 30.29 m²
Genoa: 27.12 m²
Spinnaker: 64.18 m²
Asymmetric spinnaker: 0 m²

Design

Type: Lavranos 34
Builder: John Robertson Yac
Designer: Lavranos
Year built: 1986
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.

6,44.8,4.101071,52,4.52,60,4.8,75,4.98,90,4.95,110,4.97,120,4.77,135,4.16,146.6,3.65336,150,3.52
8,43,4.977072,52,5.53,60,5.81,75,6,90,6.08,110,6.12,120,5.92,135,5.33,149.8,4.605017,150,4.59
10,41.4,5.599171,52,6.23,60,6.47,75,6.64,90,6.8,110,6.87,120,6.73,135,6.28,150,5.57,151.4,5.501246
12,40,6.030982,52,6.67,60,6.86,75,7.02,90,7.19,110,7.31,120,7.22,135,6.9,150,6.38,157.4,6.054959
14,38.8,6.223231,52,6.91,60,7.09,75,7.28,90,7.43,110,7.69,120,7.62,135,7.32,150,6.93,169.4,6.348332
16,38.7,6.317027,52,7.01,60,7.22,75,7.49,90,7.57,110,8.02,120,8,135,7.71,150,7.32,176.3,6.794162
20,38.8,6.377208,52,7.09,60,7.32,75,7.71,90,7.99,110,8.51,120,8.76,135,8.53,150,8.05,179,7.511144

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.52	4.8	4.98	4.95	4.97	4.77	4.16	3.52
8	5.53	5.81	6	6.08	6.12	5.92	5.33	4.59
10	6.23	6.47	6.64	6.8	6.87	6.73	6.28	5.57
12	6.67	6.86	7.02	7.19	7.31	7.22	6.9	6.38
14	6.91	7.09	7.28	7.43	7.69	7.62	7.32	6.93
16	7.01	7.22	7.49	7.57	8.02	8	7.71	7.32
20	7.09	7.32	7.71	7.99	8.51	8.76	8.53	8.05

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.8°	2.91	146.6°	3.05
8	43°	3.64	149.8°	3.98
10	41.4°	4.2	151.4°	4.83
12	40°	4.62	157.4°	5.59
14	38.8°	4.85	169.4°	6.24
16	38.7°	4.93	176.3°	6.78
20	38.8°	4.97	179°	7.51

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