NORTHERN SPY — ORC Rating

GPH

565.6

OSN

551.4

LOA

13.6 m

Displacement

10201 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7011

Medium

0.9625

High

1.119

Triple Offshore

Low

0.919

Medium

1.2005

High

1.3528

Boat Specifications

Dimensions

Length overall: 13.6 m
Beam: 4.3 m
Draft: 2.27 m
Displacement: 10201 kg
Crew weight: 919 kg
Wetted surface: 41.4 m²

Sails

Mainsail: 63.48 m²
Genoa: 60.14 m²
Spinnaker: 146.58 m²
Asymmetric spinnaker: 143.73 m²

Design

Type: DUFOUR 45 E
Builder: DUFOUR
Designer: FELICI/ROSEO
Year built: 2008

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.

6,44.2,5.161034,52,5.7,60,6.09,75,6.43,90,6.67,110,6.46,120,6.12,135,5.38,141.5,5.008892,150,4.52
8,42.8,6.133047,52,6.84,60,7.21,75,7.58,90,7.81,110,7.66,120,7.36,135,6.65,148,5.81335,150,5.69
10,42,6.903096,52,7.65,60,7.9,75,8.13,90,8.36,110,8.29,120,8.12,135,7.68,149.5,6.777858,150,6.74
12,40.9,7.263313,52,7.99,60,8.22,75,8.42,90,8.69,110,8.73,120,8.6,135,8.27,150,7.65,154,7.421055
14,39.8,7.367072,52,8.12,60,8.35,75,8.66,90,8.9,110,9.19,120,9.09,135,8.72,150,8.22,162,7.707218
16,39.8,7.4712,52,8.18,60,8.42,75,8.8,90,9.09,110,9.63,120,9.59,135,9.21,150,8.64,180,7.95
20,39.4,7.531703,52,8.24,60,8.48,75,8.94,90,9.5,110,10.27,120,10.48,135,10.33,150,9.57,180,8.8

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.7	6.09	6.43	6.67	6.46	6.12	5.38	4.52
8	6.84	7.21	7.58	7.81	7.66	7.36	6.65	5.69
10	7.65	7.9	8.13	8.36	8.29	8.12	7.68	6.74
12	7.99	8.22	8.42	8.69	8.73	8.6	8.27	7.65
14	8.12	8.35	8.66	8.9	9.19	9.09	8.72	8.22
16	8.18	8.42	8.8	9.09	9.63	9.59	9.21	8.64
20	8.24	8.48	8.94	9.5	10.27	10.48	10.33	9.57

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.2°	3.7	141.5°	3.92
8	42.8°	4.5	148°	4.93
10	42°	5.13	149.5°	5.84
12	40.9°	5.49	154°	6.67
14	39.8°	5.66	162°	7.33
16	39.8°	5.74	180°	7.95
20	39.4°	5.82	180°	8.8

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