TRUAND — ORC Rating | RegattaPages

GPH

715.7

OSN

694.6

LOA

8.5 m

Displacement

2332 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5751

Medium

0.7789

High

0.8819

Triple Offshore

Low

0.7383

Medium

0.9445

High

1.0443

Boat Specifications

Dimensions

Length overall: 8.5 m
Beam: 2.79 m
Draft: 1.73 m
Displacement: 2332 kg
Crew weight: 439 kg
Wetted surface: 15.74 m²

Sails

Mainsail: 22.05 m²
Genoa: 20.47 m²
Spinnaker: 41.17 m²
Asymmetric spinnaker: 0 m²

Design

Type: HUNTER IMPALA
Builder: HunterBoats
Designer: David Thomas
Year built: 1979
Stability index: 112.6

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.

6,41.8,4.158417,52,4.69,60,4.93,75,5.11,90,5.03,110,4.94,120,4.76,135,4.27,147.5,3.73492,150,3.64
8,41.2,4.944081,52,5.53,60,5.74,75,5.88,90,5.89,110,5.9,120,5.75,135,5.24,150,4.6,152,4.518955
10,39.6,5.437934,52,5.96,60,6.09,75,6.2,90,6.3,110,6.33,120,6.25,135,5.98,150,5.45,153.8,5.282759
12,38.1,5.604021,52,6.15,60,6.29,75,6.43,90,6.56,110,6.68,120,6.59,135,6.35,150,6.04,164.6,5.62185
14,37.6,5.654498,52,6.22,60,6.39,75,6.62,90,6.72,110,7.04,120,6.96,135,6.69,150,6.38,177.5,5.965678
16,37.5,5.684731,52,6.26,60,6.44,75,6.75,90,6.96,110,7.35,120,7.34,135,7.06,150,6.7,179,6.310961
20,38.2,5.713508,52,6.26,60,6.46,75,6.85,90,7.28,110,7.67,120,8,135,7.87,150,7.43,179,6.931056

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.69	4.93	5.11	5.03	4.94	4.76	4.27	3.64
8	5.53	5.74	5.88	5.89	5.9	5.75	5.24	4.6
10	5.96	6.09	6.2	6.3	6.33	6.25	5.98	5.45
12	6.15	6.29	6.43	6.56	6.68	6.59	6.35	6.04
14	6.22	6.39	6.62	6.72	7.04	6.96	6.69	6.38
16	6.26	6.44	6.75	6.96	7.35	7.34	7.06	6.7
20	6.26	6.46	6.85	7.28	7.67	8	7.87	7.43

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.8°	3.1	147.5°	3.15
8	41.2°	3.72	152°	3.99
10	39.6°	4.19	153.8°	4.74
12	38.1°	4.41	164.6°	5.42
14	37.6°	4.48	177.5°	5.96
16	37.5°	4.51	179°	6.31
20	38.2°	4.49	179°	6.93

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