Blue Note — ORC Rating

GPH

607.2

OSN

592.5

LOA

12.25 m

Displacement

7784 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6715

Medium

0.9032

High

1.0419

Triple Offshore

Low

0.8682

Medium

1.1117

High

1.244

Boat Specifications

Dimensions

Length overall: 12.25 m
Beam: 4.35 m
Draft: 2.14 m
Displacement: 7784 kg
Crew weight: 665 kg
Wetted surface: 30.54 m²

Sails

Mainsail: 59.25 m²
Genoa: 45.79 m²
Spinnaker: 98.05 m²
Asymmetric spinnaker: 0 m²

Design

Type: One Ton
Designer: Elvstrøm/Kjærulf
Year built: 1981

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.

6,42,4.938472,52,5.54,60,5.86,75,6.13,90,6.08,110,5.79,120,5.6,135,5.05,145,4.480243,150,4.24
8,41.2,5.781385,52,6.53,60,6.82,75,7.01,90,7,110,6.93,120,6.74,135,6.14,150,5.3,151,5.247995
10,40.9,6.482738,52,7.11,60,7.29,75,7.43,90,7.47,110,7.51,120,7.4,135,7.03,150,6.24,151.5,6.156002
12,39.8,6.729287,52,7.36,60,7.54,75,7.72,90,7.81,110,7.91,120,7.82,135,7.52,150,7.04,157,6.713707
14,39,6.832693,52,7.48,60,7.7,75,7.95,90,8.05,110,8.31,120,8.22,135,7.9,150,7.51,180,6.85
16,38.6,6.884017,52,7.55,60,7.79,75,8.14,90,8.32,110,8.65,120,8.61,135,8.3,150,7.87,180,7.37
20,38.6,6.922403,52,7.61,60,7.88,75,8.34,90,8.72,110,9.08,120,9.29,135,9.06,150,8.6,180,8.09

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.54	5.86	6.13	6.08	5.79	5.6	5.05	4.24
8	6.53	6.82	7.01	7	6.93	6.74	6.14	5.3
10	7.11	7.29	7.43	7.47	7.51	7.4	7.03	6.24
12	7.36	7.54	7.72	7.81	7.91	7.82	7.52	7.04
14	7.48	7.7	7.95	8.05	8.31	8.22	7.9	7.51
16	7.55	7.79	8.14	8.32	8.65	8.61	8.3	7.87
20	7.61	7.88	8.34	8.72	9.08	9.29	9.06	8.6

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	3.67	145°	3.67
8	41.2°	4.35	151°	4.59
10	40.9°	4.9	151.5°	5.41
12	39.8°	5.17	157°	6.18
14	39°	5.31	180°	6.85
16	38.6°	5.38	180°	7.37
20	38.6°	5.41	180°	8.09

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