Tora — ORC Rating | RegattaPages

GPH

687

OSN

665.7

LOA

9.85 m

Displacement

4643 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5945

Medium

0.8084

High

0.9298

Triple Offshore

Low

0.7639

Medium

0.9864

High

1.0967

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: 22.16 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: BengtKarlsson
Year built: 1984

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.

6,43.3,4.396977,52,4.87,60,5.13,75,5.27,90,5.16,110,5.11,120,4.94,135,4.43,145.6,3.926733,150,3.75
8,41.4,5.145905,52,5.73,60,5.95,75,6.1,90,6.06,110,6.12,120,5.96,135,5.45,150,4.78,150.5,4.756676
10,39.8,5.63594,52,6.23,60,6.4,75,6.53,90,6.58,110,6.67,120,6.58,135,6.23,150,5.64,153.9,5.467538
12,38.8,5.902446,52,6.49,60,6.64,75,6.79,90,6.86,110,7.01,120,6.95,135,6.7,150,6.31,160.6,5.92649
14,38.4,6.010003,52,6.62,60,6.78,75,6.97,90,7.03,110,7.3,120,7.26,135,7.04,150,6.72,174.5,6.198537
16,38,6.065907,52,6.68,60,6.85,75,7.1,90,7.22,110,7.53,120,7.55,135,7.37,150,7.04,178.6,6.611974
20,38,6.116668,52,6.74,60,6.93,75,7.24,90,7.5,110,7.85,120,8.08,135,8,150,7.65,179,7.2211
24,38.8,6.133411,52,6.74,60,6.95,75,7.32,90,7.65,110,8.08,120,8.49,135,8.73,150,8.29,179,7.791187

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.87	5.13	5.27	5.16	5.11	4.94	4.43	3.75
8	5.73	5.95	6.1	6.06	6.12	5.96	5.45	4.78
10	6.23	6.4	6.53	6.58	6.67	6.58	6.23	5.64
12	6.49	6.64	6.79	6.86	7.01	6.95	6.7	6.31
14	6.62	6.78	6.97	7.03	7.3	7.26	7.04	6.72
16	6.68	6.85	7.1	7.22	7.53	7.55	7.37	7.04
20	6.74	6.93	7.24	7.5	7.85	8.08	8	7.65
24	6.74	6.95	7.32	7.65	8.08	8.49	8.73	8.29

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.3°	3.2	145.6°	3.24
8	41.4°	3.86	150.5°	4.14
10	39.8°	4.33	153.9°	4.91
12	38.8°	4.6	160.6°	5.59
14	38.4°	4.71	174.5°	6.17
16	38°	4.78	178.6°	6.61
20	38°	4.82	179°	7.22
24	38.8°	4.78	179°	7.79

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