X ALTAIR — ORC Rating

GPH

582.3

OSN

566.2

LOA

12.1 m

Displacement

6369 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7042

Medium

0.9448

High

1.0788

Triple Offshore

Low

0.9057

Medium

1.1612

High

1.2943

Boat Specifications

Dimensions

Length overall: 12.1 m
Beam: 3.78 m
Draft: 2.4 m
Displacement: 6369 kg
Crew weight: 650 kg
Wetted surface: 30.33 m²

Sails

Mainsail: 50.2 m²
Genoa: 39.07 m²
Spinnaker: 108.38 m²
Asymmetric spinnaker: 125.17 m²

Design

Type: IMX 40
Builder: X Yachts
Designer: Jeppesen
Year built: 2000
Stability index: 122.6

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.

6,42.6,5.026511,52,5.61,60,5.92,75,6.17,90,6.1,110,6.13,120,5.97,135,5.39,144.2,4.882476,150,4.57
8,41.4,5.98578,52,6.71,60,6.98,75,7.17,90,7.25,110,7.34,120,7.21,135,6.67,147.5,5.892875,150,5.74
10,40,6.631469,52,7.33,60,7.52,75,7.65,90,7.73,110,7.93,120,7.84,135,7.52,148.8,6.862573,150,6.77
12,38.7,6.829565,52,7.56,60,7.76,75,7.96,90,8.01,110,8.38,120,8.36,135,8.03,150,7.48,156.5,7.076963
14,38.4,6.94149,52,7.65,60,7.86,75,8.18,90,8.34,110,8.69,120,8.9,135,8.56,150,7.87,166.4,7.315108
16,37.8,6.973315,52,7.69,60,7.92,75,8.32,90,8.65,110,8.96,120,9.35,135,9.14,150,8.32,177.2,7.649132
20,37.7,7.115562,52,7.83,60,8.06,75,8.44,90,9.03,110,9.44,120,10,135,10.58,150,9.34,177.2,8.500148

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.61	5.92	6.17	6.1	6.13	5.97	5.39	4.57
8	6.71	6.98	7.17	7.25	7.34	7.21	6.67	5.74
10	7.33	7.52	7.65	7.73	7.93	7.84	7.52	6.77
12	7.56	7.76	7.96	8.01	8.38	8.36	8.03	7.48
14	7.65	7.86	8.18	8.34	8.69	8.9	8.56	7.87
16	7.69	7.92	8.32	8.65	8.96	9.35	9.14	8.32
20	7.83	8.06	8.44	9.03	9.44	10	10.58	9.34

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.6°	3.7	144.2°	3.96
8	41.4°	4.49	147.5°	4.97
10	40°	5.08	148.8°	5.87
12	38.7°	5.33	156.5°	6.49
14	38.4°	5.44	166.4°	7.11
16	37.8°	5.51	177.2°	7.64
20	37.7°	5.63	177.2°	8.49

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