Zephyr — ORC Rating | RegattaPages

GPH

649.8

OSN

639.3

LOA

10.5 m

Displacement

4241 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6475

Medium

0.8367

High

0.9399

Triple Offshore

Low

0.8391

Medium

1.0271

High

1.1169

Boat Specifications

Dimensions

Length overall: 10.5 m
Beam: 2.4 m
Draft: 1.67 m
Displacement: 4241 kg
Crew weight: 603 kg
Wetted surface: 21.57 m²

Sails

Mainsail: 36.53 m²
Genoa: 32.64 m²
Spinnaker: 77.53 m²
Asymmetric spinnaker: 0 m²

Design

Type: ELVSTRØM 10,5
Designer: Elvstrøm/Kjærulf
Year built: 1981

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.

6,42.4,4.820874,52,5.39,60,5.68,75,5.95,90,5.93,110,5.69,120,5.51,135,4.95,145,4.33375,150,4.1
8,41.2,5.449121,52,6.17,60,6.44,75,6.64,90,6.67,110,6.67,120,6.58,135,6.09,150,5.161511
10,40.9,5.781544,52,6.45,60,6.68,75,6.9,90,6.99,110,7.05,120,7.05,135,6.82,149.5,6.185956,150,6.16
12,40.5,5.944193,52,6.57,60,6.78,75,7.02,90,7.19,110,7.25,120,7.37,135,7.19,150,6.83,159,6.50185
14,40.5,6.023098,52,6.64,60,6.84,75,7.09,90,7.33,110,7.41,120,7.63,135,7.56,150,7.18,180,6.67
16,39.8,6.052453,52,6.66,60,6.87,75,7.14,90,7.43,110,7.57,120,7.84,135,7.98,150,7.53,180,7.05
20,40.5,6.141456,52,6.75,60,6.95,75,7.19,90,7.52,110,7.92,120,8.22,135,8.81,150,8.4,180,7.74

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.39	5.68	5.95	5.93	5.69	5.51	4.95	4.1
8	6.17	6.44	6.64	6.67	6.67	6.58	6.09	5.16
10	6.45	6.68	6.9	6.99	7.05	7.05	6.82	6.16
12	6.57	6.78	7.02	7.19	7.25	7.37	7.19	6.83
14	6.64	6.84	7.09	7.33	7.41	7.63	7.56	7.18
16	6.66	6.87	7.14	7.43	7.57	7.84	7.98	7.53
20	6.75	6.95	7.19	7.52	7.92	8.22	8.81	8.4

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	3.56	145°	3.55
8	41.2°	4.1	150°	4.47
10	40.9°	4.37	149.5°	5.33
12	40.5°	4.52	159°	6.07
14	40.5°	4.58	180°	6.67
16	39.8°	4.65	180°	7.05
20	40.5°	4.67	180°	7.74

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