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GPH

706.2

OSN

684.6

LOA

7.927 m

Displacement

1847 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5755

Medium

0.7855

High

0.8945

Triple Offshore

Low

0.7433

Medium

0.9582

High

1.0733

Boat Specifications

Dimensions

Length overall: 7.927 m
Beam: 2.86 m
Draft: 1.38 m
Displacement: 1847 kg
Crew weight: 378 kg
Wetted surface: 14.57 m²

Sails

Mainsail: 21.32 m²
Genoa: 17.53 m²
Spinnaker: 46.87 m²
Asymmetric spinnaker: 0 m²

Design

Type: X-79
Builder: X-Yachts
Designer: N. Jeppesen
Year built: 1979
Stability index: 98.4

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.

6,42.9,4.136277,52,4.63,60,4.91,75,5.11,90,5.09,110,5.11,120,4.94,135,4.44,146.9,3.843772,150,3.72
8,42,4.925016,52,5.49,60,5.73,75,5.88,90,5.98,110,6.03,120,5.91,135,5.42,150,4.71,151.4,4.647015
10,40.8,5.468992,52,5.98,60,6.12,75,6.24,90,6.41,110,6.49,120,6.4,135,6.13,150,5.59,152.3,5.489084
12,39,5.687477,52,6.21,60,6.36,75,6.52,90,6.69,110,6.93,120,6.84,135,6.54,150,6.19,162.8,5.809825
14,38.4,5.754801,52,6.31,60,6.51,75,6.79,90,6.87,110,7.34,120,7.29,135,6.97,150,6.57,177.2,6.077255
16,38.4,5.793081,52,6.36,60,6.59,75,6.98,90,7.17,110,7.65,120,7.77,135,7.41,150,6.97,179,6.440981
20,39.3,5.828077,52,6.37,60,6.63,75,7.12,90,7.61,110,8.1,120,8.71,135,8.56,150,7.83,178.1,7.193955

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.63	4.91	5.11	5.09	5.11	4.94	4.44	3.72
8	5.49	5.73	5.88	5.98	6.03	5.91	5.42	4.71
10	5.98	6.12	6.24	6.41	6.49	6.4	6.13	5.59
12	6.21	6.36	6.52	6.69	6.93	6.84	6.54	6.19
14	6.31	6.51	6.79	6.87	7.34	7.29	6.97	6.57
16	6.36	6.59	6.98	7.17	7.65	7.77	7.41	6.97
20	6.37	6.63	7.12	7.61	8.1	8.71	8.56	7.83

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.9°	3.03	146.9°	3.22
8	42°	3.66	151.4°	4.08
10	40.8°	4.14	152.3°	4.86
12	39°	4.42	162.8°	5.55
14	38.4°	4.51	177.2°	6.07
16	38.4°	4.54	179°	6.44
20	39.3°	4.51	178.1°	7.19

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