ATCHIM — ORC Rating | RegattaPages

GPH

644.7

OSN

626.6

LOA

9.982 m

Displacement

4493 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6285

Medium

0.8552

High

0.9792

Triple Offshore

Low

0.8122

Medium

1.0514

High

1.1742

Boat Specifications

Dimensions

Length overall: 9.982 m
Beam: 3.37 m
Draft: 1.99 m
Displacement: 4493 kg
Crew weight: 550 kg
Wetted surface: 23.23 m²

Sails

Mainsail: 34.09 m²
Genoa: 26.22 m²
Spinnaker: 80.14 m²
Asymmetric spinnaker: 0 m²

Design

Type: FIRST 34.7
Builder: BENETEAU
Designer: FARR
Year built: 2005

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.

6,42.8,4.456681,52,5.02,60,5.32,75,5.56,90,5.5,110,5.57,120,5.41,135,4.9,145,4.370373,150,4.13
8,41.2,5.236473,52,5.94,60,6.24,75,6.47,90,6.56,110,6.68,120,6.55,135,6.03,150,5.196152
10,40.9,5.927075,52,6.58,60,6.78,75,6.93,90,7.09,110,7.2,120,7.13,135,6.84,150,6.15,150.5,6.123933
12,39.8,6.234678,52,6.88,60,7.05,75,7.21,90,7.31,110,7.59,120,7.53,135,7.27,150,6.86,158,6.525135
14,39.2,6.323034,52,7,60,7.2,75,7.43,90,7.53,110,7.97,120,7.97,135,7.67,150,7.26,180,6.66
16,39.8,6.416902,52,7.05,60,7.26,75,7.61,90,7.8,110,8.2,120,8.42,135,8.11,150,7.63,180,7.11
20,39.8,6.481982,52,7.09,60,7.29,75,7.75,90,8.25,110,8.59,120,9.02,135,9.1,150,8.46,180,7.83

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.02	5.32	5.56	5.5	5.57	5.41	4.9	4.13
8	5.94	6.24	6.47	6.56	6.68	6.55	6.03	5.19
10	6.58	6.78	6.93	7.09	7.2	7.13	6.84	6.15
12	6.88	7.05	7.21	7.31	7.59	7.53	7.27	6.86
14	7	7.2	7.43	7.53	7.97	7.97	7.67	7.26
16	7.05	7.26	7.61	7.8	8.2	8.42	8.11	7.63
20	7.09	7.29	7.75	8.25	8.59	9.02	9.1	8.46

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.27	145°	3.58
8	41.2°	3.94	150°	4.5
10	40.9°	4.48	150.5°	5.33
12	39.8°	4.79	158°	6.05
14	39.2°	4.9	180°	6.66
16	39.8°	4.93	180°	7.11
20	39.8°	4.98	180°	7.83

Loading polar chart…