ALTAIR III — ORC Rating

GPH

627.4

OSN

610.9

LOA

12.129 m

Displacement

8040 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.657

Medium

0.8801

High

1.0138

Triple Offshore

Low

0.8419

Medium

1.0752

High

1.1988

Boat Specifications

Dimensions

Length overall: 12.129 m
Beam: 3.9 m
Draft: 2.12 m
Displacement: 8040 kg
Crew weight: 878 kg
Wetted surface: 29.33 m²

Sails

Mainsail: 34.67 m²
Genoa: 62.31 m²
Spinnaker: 122.35 m²
Asymmetric spinnaker: 110.86 m²

Design

Type: C&C 402
Builder: C&C
Designer: C&C
Year built: 1978

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.

6,42,4.76354,52,5.32,60,5.6,75,5.84,90,5.75,110,5.51,120,5.37,135,4.93,146.5,4.38909,150,4.23
8,41.2,5.555445,52,6.28,60,6.55,75,6.73,90,6.7,110,6.65,120,6.52,135,6.01,150,5.25,151,5.190827
10,40.9,6.244597,52,6.85,60,7.01,75,7.13,90,7.14,110,7.23,120,7.16,135,6.87,150,6.17,150.5,6.135423
12,39.8,6.52103,52,7.1,60,7.25,75,7.38,90,7.43,110,7.58,120,7.54,135,7.31,150,6.9,157,6.583344
14,38.6,6.602514,52,7.23,60,7.4,75,7.58,90,7.64,110,7.9,120,7.9,135,7.66,150,7.3,175,6.695478
16,37.9,6.653283,52,7.3,60,7.49,75,7.76,90,7.86,110,8.19,120,8.24,135,8.02,150,7.62,180,7.14
20,37.9,6.716648,52,7.36,60,7.58,75,7.97,90,8.24,110,8.51,120,8.77,135,8.71,150,8.29,180,7.78

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.32	5.6	5.84	5.75	5.51	5.37	4.93	4.23
8	6.28	6.55	6.73	6.7	6.65	6.52	6.01	5.25
10	6.85	7.01	7.13	7.14	7.23	7.16	6.87	6.17
12	7.1	7.25	7.38	7.43	7.58	7.54	7.31	6.9
14	7.23	7.4	7.58	7.64	7.9	7.9	7.66	7.3
16	7.3	7.49	7.76	7.86	8.19	8.24	8.02	7.62
20	7.36	7.58	7.97	8.24	8.51	8.77	8.71	8.29

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	3.54	146.5°	3.66
8	41.2°	4.18	151°	4.54
10	40.9°	4.72	150.5°	5.34
12	39.8°	5.01	157°	6.06
14	38.6°	5.16	175°	6.67
16	37.9°	5.25	180°	7.14
20	37.9°	5.3	180°	7.78

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