Firefly — ORC Rating | RegattaPages

GPH

769.1

OSN

742.4

LOA

6.505 m

Displacement

886 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5156

Medium

0.7158

High

0.8304

Triple Offshore

Low

0.6677

Medium

0.8855

High

1.0183

Boat Specifications

Dimensions

Length overall: 6.505 m
Beam: 2.51 m
Draft: 1.24 m
Displacement: 886 kg
Crew weight: 275 kg
Wetted surface: 11.03 m²

Sails

Mainsail: 13.74 m²
Genoa: 8.86 m²
Spinnaker: 31.44 m²
Asymmetric spinnaker: 0 m²

Design

Type: F & F 65 STD
Builder: F&F Boats
Designer: Jac de Ridder
Year built: 1992
Stability index: 95.8

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.

6,44.1,3.648383,52,4.03,60,4.26,75,4.42,90,4.68,110,4.73,120,4.57,135,4.01,147.8,3.509837,150,3.43
8,42.4,4.33337,52,4.83,60,5.06,75,5.22,90,5.56,110,5.61,120,5.49,135,5,150,4.4,151.4,4.339492
10,40.8,4.795276,52,5.36,60,5.56,75,5.74,90,6.07,110,6.16,120,6.05,135,5.75,150,5.22,154.6,5.025819
12,40.2,5.158445,52,5.7,60,5.87,75,6.05,90,6.43,110,6.69,120,6.57,135,6.23,150,5.83,166.4,5.380874
14,40,5.378278,52,5.91,60,6.12,75,6.37,90,6.61,110,7.19,120,7.12,135,6.73,150,6.28,177.2,5.756873
16,40.5,5.44446,52,5.99,60,6.27,75,6.65,90,6.77,110,7.61,120,7.74,135,7.27,150,6.73,177.2,6.167363
20,42.4,5.497963,52,6.03,60,6.35,75,6.92,90,7.41,110,8.21,120,9.11,135,8.79,150,7.82,176.6,7.032378

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.03	4.26	4.42	4.68	4.73	4.57	4.01	3.43
8	4.83	5.06	5.22	5.56	5.61	5.49	5	4.4
10	5.36	5.56	5.74	6.07	6.16	6.05	5.75	5.22
12	5.7	5.87	6.05	6.43	6.69	6.57	6.23	5.83
14	5.91	6.12	6.37	6.61	7.19	7.12	6.73	6.28
16	5.99	6.27	6.65	6.77	7.61	7.74	7.27	6.73
20	6.03	6.35	6.92	7.41	8.21	9.11	8.79	7.82

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.1°	2.62	147.8°	2.97
8	42.4°	3.2	151.4°	3.81
10	40.8°	3.63	154.6°	4.54
12	40.2°	3.94	166.4°	5.23
14	40°	4.12	177.2°	5.75
16	40.5°	4.14	177.2°	6.16
20	42.4°	4.06	176.6°	7.02

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