Tora — ORC Rating | RegattaPages

GPH

686.7

OSN

665.5

LOA

9.85 m

Displacement

4643 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5958

Medium

0.8088

High

0.9295

Triple Offshore

Low

0.7652

Medium

0.9864

High

1.0961

Boat Specifications

Dimensions

Length overall: 9.85 m
Beam: 3.27 m
Draft: 1.75 m
Displacement: 4643 kg
Crew weight: 534 kg
Wetted surface: 22.06 m²

Sails

Mainsail: 30.13 m²
Genoa: 29.31 m²
Spinnaker: 61.78 m²
Asymmetric spinnaker: 0 m²

Design

Type: MAMBA 33
Builder: BK Marin AB
Designer: Bengt Karlsson
Year built: 1984
Stability index: 113.1

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.

6,43.2,4.389764,52,4.88,60,5.13,75,5.28,90,5.17,110,5.12,120,4.95,135,4.44,146,3.920208,150,3.76
8,41.2,5.130148,52,5.73,60,5.95,75,6.09,90,6.06,110,6.13,120,5.97,135,5.46,150,4.79,151.1,4.740341
10,39.9,5.644156,52,6.23,60,6.39,75,6.52,90,6.58,110,6.67,120,6.59,135,6.24,150,5.66,154.1,5.469354
12,38.8,5.876783,52,6.48,60,6.63,75,6.77,90,6.86,110,7.01,120,6.96,135,6.71,150,6.32,161,5.933252
14,38.4,5.997243,52,6.6,60,6.76,75,6.95,90,7.03,110,7.3,120,7.27,135,7.05,150,6.73,175.4,6.210003
16,38.1,6.061492,52,6.66,60,6.84,75,7.09,90,7.22,110,7.53,120,7.56,135,7.38,150,7.05,179,6.621008
20,37.8,6.100069,52,6.73,60,6.92,75,7.23,90,7.5,110,7.86,120,8.08,135,8.01,150,7.67,179,7.231101

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.88	5.13	5.28	5.17	5.12	4.95	4.44	3.76
8	5.73	5.95	6.09	6.06	6.13	5.97	5.46	4.79
10	6.23	6.39	6.52	6.58	6.67	6.59	6.24	5.66
12	6.48	6.63	6.77	6.86	7.01	6.96	6.71	6.32
14	6.6	6.76	6.95	7.03	7.3	7.27	7.05	6.73
16	6.66	6.84	7.09	7.22	7.53	7.56	7.38	7.05
20	6.73	6.92	7.23	7.5	7.86	8.08	8.01	7.67

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.2	146°	3.25
8	41.2°	3.86	151.1°	4.15
10	39.9°	4.33	154.1°	4.92
12	38.8°	4.58	161°	5.61
14	38.4°	4.7	175.4°	6.19
16	38.1°	4.77	179°	6.62
20	37.8°	4.82	179°	7.23

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