Hamba — ORC Rating | RegattaPages

GPH

767.7

OSN

746.7

LOA

7.53 m

Displacement

1800 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5552

Medium

0.7293

High

0.8104

Triple Offshore

Low

0.7027

Medium

0.8731

High

0.9533

Boat Specifications

Dimensions

Length overall: 7.53 m
Beam: 2.64 m
Draft: 1.48 m
Displacement: 1800 kg
Crew weight: 260 kg
Wetted surface: 11.84 m²

Sails

Mainsail: 13.66 m²
Genoa: 19.82 m²
Spinnaker: 43.1 m²
Asymmetric spinnaker: 0 m²

Design

Type: Elvstrom 1/4 Ton
Builder: Elvstrom & Kjareul
Designer: Elvstrom
Year built: 1977
Stability index: 110.9

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.

6,40.9,3.876413,52,4.38,60,4.59,75,4.73,90,4.65,110,4.72,120,4.58,135,4.2,148.8,3.694333,150,3.65
8,40.8,4.570704,52,5.09,60,5.25,75,5.35,90,5.39,110,5.48,120,5.41,135,5.1,150,4.53,152,4.451
10,39.3,4.975187,52,5.42,60,5.53,75,5.62,90,5.72,110,5.83,120,5.78,135,5.6,150,5.27,155.9,5.06116
12,38.4,5.129557,52,5.58,60,5.7,75,5.81,90,5.89,110,6.13,120,6.11,135,5.92,150,5.66,171.2,5.251822
14,37.8,5.1762,52,5.66,60,5.81,75,5.99,90,6.07,110,6.4,120,6.42,135,6.25,150,5.96,178.4,5.59218
16,37.8,5.201511,52,5.71,60,5.88,75,6.13,90,6.27,110,6.56,120,6.69,135,6.58,150,6.26,179,5.870894
20,38.4,5.206117,52,5.71,60,5.91,75,6.28,90,6.56,110,6.78,120,7,135,7.13,150,6.85,178.4,6.442512

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.38	4.59	4.73	4.65	4.72	4.58	4.2	3.65
8	5.09	5.25	5.35	5.39	5.48	5.41	5.1	4.53
10	5.42	5.53	5.62	5.72	5.83	5.78	5.6	5.27
12	5.58	5.7	5.81	5.89	6.13	6.11	5.92	5.66
14	5.66	5.81	5.99	6.07	6.4	6.42	6.25	5.96
16	5.71	5.88	6.13	6.27	6.56	6.69	6.58	6.26
20	5.71	5.91	6.28	6.56	6.78	7	7.13	6.85

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	40.9°	2.93	148.8°	3.16
8	40.8°	3.46	152°	3.93
10	39.3°	3.85	155.9°	4.62
12	38.4°	4.02	171.2°	5.19
14	37.8°	4.09	178.4°	5.59
16	37.8°	4.11	179°	5.87
20	38.4°	4.08	178.4°	6.44

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