DONNA — ORC Rating | RegattaPages

GPH

683.5

OSN

667

LOA

9.447 m

Displacement

4472 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6094

Medium

0.8065

High

0.913

Triple Offshore

Low

0.7826

Medium

0.9838

High

1.0819

Boat Specifications

Dimensions

Length overall: 9.447 m
Beam: 3.02 m
Draft: 1.64 m
Displacement: 4472 kg
Crew weight: 450 kg
Wetted surface: 20.49 m²

Sails

Mainsail: 32.93 m²
Genoa: 30.49 m²
Spinnaker: 62.01 m²
Asymmetric spinnaker: 0 m²

Design

Type: INFERNO 31
Builder: FINNGULF MARIN
Designer: H.SÖDERGREN
Year built: 1985
Stability index: 124.9

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.

6,42.6,4.455934,52,4.96,60,5.23,75,5.44,90,5.39,110,5.24,120,5.07,135,4.59,146.9,4.046704,150,3.91
8,41.8,5.191314,52,5.8,60,6.04,75,6.2,90,6.2,110,6.22,120,6.09,135,5.57,150,4.89,152.3,4.800125
10,41.7,5.732362,52,6.25,60,6.41,75,6.54,90,6.6,110,6.66,120,6.59,135,6.32,150,5.76,153.8,5.583676
12,40.6,5.887224,52,6.43,60,6.59,75,6.75,90,6.81,110,6.97,120,6.91,135,6.7,150,6.38,162.2,5.986581
14,40.1,5.961397,52,6.51,60,6.68,75,6.9,90,7.02,110,7.28,120,7.24,135,7.01,150,6.72,176.6,6.281056
16,39.7,5.991685,52,6.55,60,6.73,75,7.01,90,7.22,110,7.54,120,7.58,135,7.36,150,7.02,179,6.641011
20,39.6,6.034938,52,6.58,60,6.76,75,7.12,90,7.52,110,7.82,120,8.1,135,8.06,150,7.69,179,7.2211

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.96	5.23	5.44	5.39	5.24	5.07	4.59	3.91
8	5.8	6.04	6.2	6.2	6.22	6.09	5.57	4.89
10	6.25	6.41	6.54	6.6	6.66	6.59	6.32	5.76
12	6.43	6.59	6.75	6.81	6.97	6.91	6.7	6.38
14	6.51	6.68	6.9	7.02	7.28	7.24	7.01	6.72
16	6.55	6.73	7.01	7.22	7.54	7.58	7.36	7.02
20	6.58	6.76	7.12	7.52	7.82	8.1	8.06	7.69

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.6°	3.28	146.9°	3.39
8	41.8°	3.87	152.3°	4.25
10	41.7°	4.28	153.8°	5.01
12	40.6°	4.47	162.2°	5.7
14	40.1°	4.56	176.6°	6.27
16	39.7°	4.61	179°	6.64
20	39.6°	4.65	179°	7.22

Loading polar chart…