X ALTAIR — ORC Rating

GPH

576.6

OSN

562.5

LOA

12.1 m

Displacement

6370 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7172

Medium

0.9504

High

1.0808

Triple Offshore

Low

0.9239

Medium

1.1676

High

1.2961

Boat Specifications

Dimensions

Length overall: 12.1 m
Beam: 3.78 m
Draft: 2.4 m
Displacement: 6370 kg
Crew weight: 650 kg
Wetted surface: 30.57 m²

Sails

Mainsail: 49.65 m²
Genoa: 52.26 m²
Spinnaker: 108.38 m²
Asymmetric spinnaker: 125.17 m²

Design

Type: IMX 40
Builder: X Yachts
Designer: Jeppesen
Year built: 2000

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.

6,42.4,5.254211,52,5.87,60,6.19,75,6.46,90,6.41,110,6.14,120,5.98,135,5.37,144,4.857747,150,4.54
8,40.9,6.191676,52,6.94,60,7.19,75,7.35,90,7.33,110,7.33,120,7.2,135,6.62,147.5,5.83359,150,5.68
10,39.8,6.742303,52,7.43,60,7.62,75,7.77,90,7.78,110,7.91,120,7.82,135,7.48,148.8,6.780737,150,6.7
12,38.2,6.858755,52,7.6,60,7.8,75,8.04,90,8.12,110,8.35,120,8.31,135,7.97,150,7.41,156,7.07135
14,37.9,6.970106,52,7.68,60,7.89,75,8.22,90,8.44,110,8.68,120,8.83,135,8.46,150,7.85,171,7.188502
16,37.9,7.020798,52,7.73,60,7.94,75,8.34,90,8.71,110,8.94,120,9.31,135,9.01,150,8.28,180,7.64
20,37.6,7.105987,52,7.8,60,8.01,75,8.44,90,9,110,9.42,120,9.95,135,10.32,150,9.27,180,8.47

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.87	6.19	6.46	6.41	6.14	5.98	5.37	4.54
8	6.94	7.19	7.35	7.33	7.33	7.2	6.62	5.68
10	7.43	7.62	7.77	7.78	7.91	7.82	7.48	6.7
12	7.6	7.8	8.04	8.12	8.35	8.31	7.97	7.41
14	7.68	7.89	8.22	8.44	8.68	8.83	8.46	7.85
16	7.73	7.94	8.34	8.71	8.94	9.31	9.01	8.28
20	7.8	8.01	8.44	9	9.42	9.95	10.32	9.27

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	3.88	144°	3.93
8	40.9°	4.68	147.5°	4.92
10	39.8°	5.18	148.8°	5.8
12	38.2°	5.39	156°	6.46
14	37.9°	5.5	171°	7.1
16	37.9°	5.54	180°	7.64
20	37.6°	5.63	180°	8.47

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