ALCHERA — ORC Rating | RegattaPages

GPH

630.6

OSN

613.1

LOA

9.982 m

Displacement

4641 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6579

Medium

0.8715

High

0.9777

Triple Offshore

Low

0.8432

Medium

1.0694

High

1.1784

Boat Specifications

Dimensions

Length overall: 9.982 m
Beam: 3.37 m
Draft: 2 m
Displacement: 4641 kg
Crew weight: 595 kg
Wetted surface: 23.53 m²

Sails

Mainsail: 33.68 m²
Genoa: 32.67 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 100.86 m²

Design

Type: FIRST 34.7
Builder: BENETEAU
Designer: FARR BRUCE
Year built: 2005
Stability index: 127.1

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.

6,43.2,4.718996,52,5.25,60,5.53,75,5.71,90,5.65,110,5.75,120,5.61,135,5.04,144.3,4.568496,150,4.29
8,41.2,5.542155,52,6.17,60,6.39,75,6.54,90,6.63,110,6.78,120,6.68,135,6.22,147.8,5.518834,150,5.4
10,39.4,6.056421,52,6.7,60,6.86,75,6.98,90,7.1,110,7.29,120,7.24,135,6.97,148.7,6.401713,150,6.31
12,38.2,6.286132,52,6.96,60,7.12,75,7.27,90,7.32,110,7.67,120,7.67,135,7.42,149.8,6.907525,150,6.9
14,37.6,6.373932,52,7.08,60,7.27,75,7.48,90,7.56,110,7.98,120,8.07,135,7.84,150,7.23,167.6,6.440236
16,37.8,6.467085,52,7.14,60,7.34,75,7.64,90,7.8,110,8.19,120,8.44,135,8.28,150,7.53,174.5,6.841497
20,38.2,6.515181,52,7.19,60,7.42,75,7.8,90,8.16,110,8.56,120,9.04,135,9.31,150,8.14,176.3,7.505645

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.25	5.53	5.71	5.65	5.75	5.61	5.04	4.29
8	6.17	6.39	6.54	6.63	6.78	6.68	6.22	5.4
10	6.7	6.86	6.98	7.1	7.29	7.24	6.97	6.31
12	6.96	7.12	7.27	7.32	7.67	7.67	7.42	6.9
14	7.08	7.27	7.48	7.56	7.98	8.07	7.84	7.23
16	7.14	7.34	7.64	7.8	8.19	8.44	8.28	7.53
20	7.19	7.42	7.8	8.16	8.56	9.04	9.31	8.14

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.44	144.3°	3.71
8	41.2°	4.17	147.8°	4.67
10	39.4°	4.68	148.7°	5.47
12	38.2°	4.94	149.8°	5.97
14	37.6°	5.05	167.6°	6.29
16	37.8°	5.11	174.5°	6.81
20	38.2°	5.12	176.3°	7.49

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