Tora — ORC Rating | RegattaPages

GPH

690.9

OSN

669.9

LOA

9.85 m

Displacement

4643 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5871

Medium

0.8015

High

0.9256

Triple Offshore

Low

0.7563

Medium

0.9816

High

1.0963

Boat Specifications

Dimensions

Length overall: 9.85 m
Beam: 3.27 m
Draft: 1.75 m
Displacement: 4643 kg
Crew weight: 537 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

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.

6,43.2,4.252584,52,4.75,60,5.02,75,5.21,90,5.13,110,5.1,120,4.94,135,4.46,146.6,3.940838,150,3.8
8,41.4,4.959266,52,5.6,60,5.9,75,6.1,90,6.09,110,6.15,120,5.99,135,5.44,150,4.79,152,4.711491
10,41.4,5.612502,52,6.21,60,6.39,75,6.53,90,6.61,110,6.67,120,6.59,135,6.26,150,5.65,153.8,5.472225
12,40,5.926549,52,6.49,60,6.64,75,6.77,90,6.89,110,6.99,120,6.92,135,6.69,150,6.34,159.5,5.989289
14,39.4,6.056421,52,6.62,60,6.79,75,6.97,90,7.04,110,7.32,120,7.25,135,7.01,150,6.72,174.8,6.225622
16,38.8,6.094917,52,6.68,60,6.86,75,7.12,90,7.23,110,7.62,120,7.59,135,7.35,150,7.01,179,6.621008
20,39,6.124976,52,6.72,60,6.92,75,7.3,90,7.6,110,7.95,120,8.21,135,8.06,150,7.67,179,7.201097

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.75	5.02	5.21	5.13	5.1	4.94	4.46	3.8
8	5.6	5.9	6.1	6.09	6.15	5.99	5.44	4.79
10	6.21	6.39	6.53	6.61	6.67	6.59	6.26	5.65
12	6.49	6.64	6.77	6.89	6.99	6.92	6.69	6.34
14	6.62	6.79	6.97	7.04	7.32	7.25	7.01	6.72
16	6.68	6.86	7.12	7.23	7.62	7.59	7.35	7.01
20	6.72	6.92	7.3	7.6	7.95	8.21	8.06	7.67

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.1	146.6°	3.29
8	41.4°	3.72	152°	4.16
10	41.4°	4.21	153.8°	4.91
12	40°	4.54	159.5°	5.61
14	39.4°	4.68	174.8°	6.2
16	38.8°	4.75	179°	6.62
20	39°	4.76	179°	7.2

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