Hanna — ORC Rating | RegattaPages

GPH

799.7

OSN

774.7

LOA

7 m

Displacement

950 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5709

Medium

0.7848

High

0.8858

Triple Offshore

Low

0.7349

Medium

0.9548

High

1.0664

Boat Specifications

Dimensions

Length overall: 7 m
Beam: 2.41 m
Draft: 1.19 m
Displacement: 950 kg
Crew weight: 263 kg
Wetted surface: 9.43 m²

Sails

Mainsail: 15.74 m²
Genoa: 8.22 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 0 m²

Design

Type: Sonar
Builder: Sonar (UK) Ltd
Designer: Kirby
Year built: 1979

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.

6,42.8,3.747973,52,4.19,60,4.44,75,4.65,90,4.63,110,4.35,120,4.1,135,3.6,150,3.14,159.8,2.919574
8,42.1,4.420629,52,4.96,60,5.18,75,5.34,90,5.36,110,5.21,120,4.97,135,4.48,150,4.01,180,3.56
10,41.4,4.90594,52,5.39,60,5.54,75,5.67,90,5.73,110,5.64,120,5.51,135,5.19,150,4.76,180,4.3
12,40.2,5.13226,52,5.61,60,5.77,75,5.94,90,6.06,110,5.95,120,5.83,135,5.61,150,5.35,180,4.96
14,40.2,5.223908,52,5.72,60,5.93,75,6.21,90,6.42,110,6.28,120,6.14,135,5.91,150,5.7,180,5.45
16,40.9,5.252341,52,5.75,60,6.01,75,6.4,90,6.73,110,6.62,120,6.48,135,6.23,150,6,180,5.77
20,42.7,5.279525,52,5.73,60,6,75,6.54,90,7.13,110,7.4,120,7.21,135,6.9,150,6.64,180,6.39

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.19	4.44	4.65	4.63	4.35	4.1	3.6	3.14
8	4.96	5.18	5.34	5.36	5.21	4.97	4.48	4.01
10	5.39	5.54	5.67	5.73	5.64	5.51	5.19	4.76
12	5.61	5.77	5.94	6.06	5.95	5.83	5.61	5.35
14	5.72	5.93	6.21	6.42	6.28	6.14	5.91	5.7
16	5.75	6.01	6.4	6.73	6.62	6.48	6.23	6
20	5.73	6	6.54	7.13	7.4	7.21	6.9	6.64

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	2.75	159.8°	2.74
8	42.1°	3.28	180°	3.56
10	41.4°	3.68	180°	4.3
12	40.2°	3.92	180°	4.96
14	40.2°	3.99	180°	5.45
16	40.9°	3.97	180°	5.77
20	42.7°	3.88	180°	6.39

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