TRUE BLUE — ORC Rating

GPH

682.2

OSN

663

LOA

9.38 m

Displacement

2582 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5984

Medium

0.8108

High

0.9243

Triple Offshore

Low

0.7723

Medium

0.9914

High

1.1041

Boat Specifications

Dimensions

Length overall: 9.38 m
Beam: 3.24 m
Draft: 1.72 m
Displacement: 2582 kg
Crew weight: 425 kg
Wetted surface: 16.82 m²

Sails

Mainsail: 29.91 m²
Genoa: 16.09 m²
Spinnaker: 49.61 m²
Asymmetric spinnaker: 0 m²

Design

Type: FINNFLYER 31 LF
Builder: POLAR YACHT
Designer: EIVIND STILL
Year built: 1986
Stability index: 108.2

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.

6,42,4.279112,52,4.82,60,5.09,75,5.27,90,5.33,110,5.28,120,5.08,135,4.55,146,4.016706,150,3.84
8,41.4,5.105911,52,5.72,60,5.96,75,6.12,90,6.25,110,6.27,120,6.12,135,5.6,150,4.85,151.1,4.797453
10,40,5.639359,52,6.22,60,6.38,75,6.51,90,6.68,110,6.75,120,6.64,135,6.34,150,5.76,152.4,5.642044
12,39,5.841888,52,6.42,60,6.59,75,6.78,90,6.94,110,7.18,120,7.08,135,6.76,150,6.39,161.3,6.028229
14,38.7,5.91981,52,6.51,60,6.71,75,7,90,7.14,110,7.55,120,7.52,135,7.18,150,6.78,177.2,6.287506
16,38.7,5.958251,52,6.55,60,6.77,75,7.16,90,7.41,110,7.81,120,7.93,135,7.62,150,7.19,179,6.681018
20,38.7,6.047945,52,6.64,60,6.86,75,7.28,90,7.74,110,8.18,120,8.61,135,8.64,150,8.03,179,7.431132

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.82	5.09	5.27	5.33	5.28	5.08	4.55	3.84
8	5.72	5.96	6.12	6.25	6.27	6.12	5.6	4.85
10	6.22	6.38	6.51	6.68	6.75	6.64	6.34	5.76
12	6.42	6.59	6.78	6.94	7.18	7.08	6.76	6.39
14	6.51	6.71	7	7.14	7.55	7.52	7.18	6.78
16	6.55	6.77	7.16	7.41	7.81	7.93	7.62	7.19
20	6.64	6.86	7.28	7.74	8.18	8.61	8.64	8.03

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	3.18	146°	3.33
8	41.4°	3.83	151.1°	4.2
10	40°	4.32	152.4°	5
12	39°	4.54	161.3°	5.71
14	38.7°	4.62	177.2°	6.28
16	38.7°	4.65	179°	6.68
20	38.7°	4.72	179°	7.43

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