Twister — ORC Rating | RegattaPages

GPH

619.7

OSN

608

LOA

11.8 m

Displacement

5016 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7267

Medium

0.9766

High

1.1319

Triple Offshore

Low

0.9615

Medium

1.224

High

1.3696

Boat Specifications

Dimensions

Length overall: 11.8 m
Beam: 3.02 m
Draft: 1.83 m
Displacement: 5016 kg
Crew weight: 689 kg
Wetted surface: 26.32 m²

Sails

Mainsail: 39.92 m²
Genoa: 33.32 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 0 m²

Design

Type: DIVA 39
Builder: Diva
Designer: B Lindqvist
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.

6,44,5.1019,52,5.68,60,6.09,75,6.5,90,6.56,110,5.84,120,5.41,135,4.66,141.6,4.274631,150,3.87
8,42.5,5.99503,52,6.71,60,7.02,75,7.26,90,7.29,110,6.85,120,6.63,135,5.8,144.4,5.226904,150,4.91
10,41,6.399813,52,7.09,60,7.33,75,7.59,90,7.65,110,7.48,120,7.31,135,6.76,150,5.84,152.3,5.703678
12,39.5,6.531674,52,7.25,60,7.48,75,7.78,90,7.95,110,7.89,120,7.7,135,7.33,150,6.67,155.4,6.389979
14,39,6.626812,52,7.32,60,7.58,75,7.91,90,8.22,110,8.33,120,8.12,135,7.71,150,7.25,174,6.545859
16,38.8,6.659498,52,7.36,60,7.64,75,8,90,8.42,110,8.78,120,8.6,135,8.11,150,7.62,177.8,7.105237
20,39,6.74262,52,7.42,60,7.69,75,8.11,90,8.69,110,9.38,120,9.68,135,9.07,150,8.42,179.1,7.850969

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.68	6.09	6.5	6.56	5.84	5.41	4.66	3.87
8	6.71	7.02	7.26	7.29	6.85	6.63	5.8	4.91
10	7.09	7.33	7.59	7.65	7.48	7.31	6.76	5.84
12	7.25	7.48	7.78	7.95	7.89	7.7	7.33	6.67
14	7.32	7.58	7.91	8.22	8.33	8.12	7.71	7.25
16	7.36	7.64	8	8.42	8.78	8.6	8.11	7.62
20	7.42	7.69	8.11	8.69	9.38	9.68	9.07	8.42

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44°	3.67	141.6°	3.35
8	42.5°	4.42	144.4°	4.25
10	41°	4.83	152.3°	5.05
12	39.5°	5.04	155.4°	5.81
14	39°	5.15	174°	6.51
16	38.8°	5.19	177.8°	7.1
20	39°	5.24	179.1°	7.85

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