Just for fun 3 — ORC Rating

GPH

690.1

OSN

671.4

LOA

7.927 m

Displacement

1690 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6744

Medium

0.903

High

1.016

Triple Offshore

Low

0.8654

Medium

1.0981

High

1.2232

Boat Specifications

Dimensions

Length overall: 7.927 m
Beam: 2.84 m
Draft: 1.38 m
Displacement: 1690 kg
Crew weight: 368 kg
Wetted surface: 14 m²

Sails

Mainsail: 21.29 m²
Genoa: 18.92 m²
Spinnaker: 48.85 m²
Asymmetric spinnaker: 0 m²

Design

Type: X-79 OD
Builder: Nordsøe
Designer: Niels Jeppesen
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.

6,42.2,4.346625,52,4.86,60,5.11,75,5.29,90,5.23,110,5.23,120,5.06,135,4.53,147.3,3.933402,150,3.83
8,41.5,5.140491,52,5.7,60,5.87,75,5.99,90,6.05,110,6.1,120,6,135,5.54,150,4.81,151,4.767786
10,39.2,5.574593,52,6.1,60,6.23,75,6.33,90,6.47,110,6.57,120,6.47,135,6.21,150,5.68,152.7,5.559199
12,38.1,5.705681,52,6.27,60,6.44,75,6.64,90,6.71,110,7.05,120,6.96,135,6.64,150,6.25,167.9,5.747695
14,37.9,5.766179,52,6.34,60,6.54,75,6.88,90,7.01,110,7.44,120,7.45,135,7.09,150,6.65,180,6.15
16,37.8,5.783675,52,6.37,60,6.6,75,7.01,90,7.3,110,7.71,120,7.96,135,7.57,150,7.07,180,6.53
20,38.7,5.817303,52,6.39,60,6.62,75,7.09,90,7.61,110,8.22,120,8.88,135,9.01,150,8.01,180,7.31

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.86	5.11	5.29	5.23	5.23	5.06	4.53	3.83
8	5.7	5.87	5.99	6.05	6.1	6	5.54	4.81
10	6.1	6.23	6.33	6.47	6.57	6.47	6.21	5.68
12	6.27	6.44	6.64	6.71	7.05	6.96	6.64	6.25
14	6.34	6.54	6.88	7.01	7.44	7.45	7.09	6.65
16	6.37	6.6	7.01	7.3	7.71	7.96	7.57	7.07
20	6.39	6.62	7.09	7.61	8.22	8.88	9.01	8.01

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.2°	3.22	147.3°	3.31
8	41.5°	3.85	151°	4.17
10	39.2°	4.32	152.7°	4.94
12	38.1°	4.49	167.9°	5.62
14	37.9°	4.55	180°	6.15
16	37.8°	4.57	180°	6.53
20	38.7°	4.54	180°	7.31

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