TRUE BLUE — ORC Rating

GPH

680.1

OSN

661.3

LOA

9.38 m

Displacement

2582 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6119

Medium

0.8157

High

0.9213

Triple Offshore

Low

0.7849

Medium

0.9899

High

1.0918

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.

6,42.4,4.495871,52,5,60,5.24,75,5.36,90,5.37,110,5.32,120,5.13,135,4.58,145.1,4.048031,150,3.84
8,40,5.208575,52,5.8,60,5.99,75,6.11,90,6.2,110,6.23,120,6.09,135,5.61,150,4.88,150.5,4.860082
10,38.4,5.60168,52,6.2,60,6.35,75,6.48,90,6.6,110,6.7,120,6.62,135,6.3,150,5.76,154.2,5.564696
12,37.6,5.755471,52,6.38,60,6.54,75,6.72,90,6.81,110,7.05,120,7,135,6.73,150,6.36,163.7,5.928286
14,37.6,5.856444,52,6.46,60,6.64,75,6.89,90,7.02,110,7.35,120,7.36,135,7.11,150,6.76,177.2,6.257471
16,37.6,5.906931,52,6.52,60,6.7,75,7,90,7.22,110,7.59,120,7.72,135,7.5,150,7.11,179,6.651013
20,38.2,5.955283,52,6.56,60,6.77,75,7.12,90,7.49,110,7.99,120,8.5,135,8.48,150,7.88,179,7.331117

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5	5.24	5.36	5.37	5.32	5.13	4.58	3.84
8	5.8	5.99	6.11	6.2	6.23	6.09	5.61	4.88
10	6.2	6.35	6.48	6.6	6.7	6.62	6.3	5.76
12	6.38	6.54	6.72	6.81	7.05	7	6.73	6.36
14	6.46	6.64	6.89	7.02	7.35	7.36	7.11	6.76
16	6.52	6.7	7	7.22	7.59	7.72	7.5	7.11
20	6.56	6.77	7.12	7.49	7.99	8.5	8.48	7.88

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	3.32	145.1°	3.32
8	40°	3.99	150.5°	4.23
10	38.4°	4.39	154.2°	5.01
12	37.6°	4.56	163.7°	5.69
14	37.6°	4.64	177.2°	6.25
16	37.6°	4.68	179°	6.65
20	38.2°	4.68	179°	7.33

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