ALTAIR — ORC Rating | RegattaPages

GPH

706.6

OSN

685.3

LOA

9.37 m

Displacement

4009 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6499

Medium

0.8808

High

1.0095

Triple Offshore

Low

0.8323

Medium

1.08

High

1.2033

Boat Specifications

Dimensions

Length overall: 9.37 m
Beam: 3.22 m
Draft: 1.76 m
Displacement: 4009 kg
Crew weight: 400 kg
Wetted surface: 20.03 m²

Sails

Mainsail: 20.62 m²
Genoa: 32.3 m²
Spinnaker: 60.36 m²
Asymmetric spinnaker: 0 m²

Design

Type: FIRST 305
Builder: BENETEAU
Designer: J. BERRET
Year built: 1986

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.

6,42.2,4.157642,52,4.64,60,4.87,75,5.05,90,4.99,110,4.88,120,4.75,135,4.34,147.5,3.817919,150,3.72
8,41,4.862798,52,5.49,60,5.76,75,5.94,90,5.91,110,5.94,120,5.79,135,5.32,150,4.69,151.4,4.624235
10,41.3,5.510712,52,6.08,60,6.25,75,6.39,90,6.42,110,6.51,120,6.43,135,6.15,150,5.52,152.7,5.390397
12,40.3,5.808554,52,6.34,60,6.49,75,6.63,90,6.71,110,6.84,120,6.78,135,6.58,150,6.21,158.5,5.889829
14,39.5,5.88369,52,6.46,60,6.63,75,6.82,90,6.89,110,7.15,120,7.11,135,6.89,150,6.59,180,6.08
16,39.5,5.948489,52,6.52,60,6.71,75,6.97,90,7.09,110,7.44,120,7.44,135,7.21,150,6.88,180,6.49
20,40.5,5.970495,52,6.53,60,6.74,75,7.14,90,7.45,110,7.74,120,8.02,135,7.89,150,7.49,180,7.06

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.64	4.87	5.05	4.99	4.88	4.75	4.34	3.72
8	5.49	5.76	5.94	5.91	5.94	5.79	5.32	4.69
10	6.08	6.25	6.39	6.42	6.51	6.43	6.15	5.52
12	6.34	6.49	6.63	6.71	6.84	6.78	6.58	6.21
14	6.46	6.63	6.82	6.89	7.15	7.11	6.89	6.59
16	6.52	6.71	6.97	7.09	7.44	7.44	7.21	6.88
20	6.53	6.74	7.14	7.45	7.74	8.02	7.89	7.49

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.2°	3.08	147.5°	3.22
8	41°	3.67	151.4°	4.06
10	41.3°	4.14	152.7°	4.79
12	40.3°	4.43	158.5°	5.48
14	39.5°	4.54	180°	6.08
16	39.5°	4.59	180°	6.49
20	40.5°	4.54	180°	7.06

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