Norbreez II — ORC Rating

GPH

593.9

OSN

575

LOA

14.5 m

Displacement

12075 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7358

Medium

1.029

High

1.2152

Triple Offshore

Low

0.9608

Medium

1.2974

High

1.4866

Boat Specifications

Dimensions

Length overall: 14.5 m
Beam: 4.51 m
Draft: 2.29 m
Displacement: 12075 kg
Crew weight: 979 kg
Wetted surface: 43.97 m²

Sails

Mainsail: 59.99 m²
Genoa: 41.87 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 136.98 m²

Design

Type: First 47.7
Builder: Beneteau
Designer: Bruce Farr
Year built: 2000

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.

6,44.4,4.66078,52,5.21,60,5.58,75,5.88,90,5.89,110,5.95,120,5.77,135,5.17,143.5,4.68989,150,4.35
8,42.7,5.57888,52,6.28,60,6.65,75,6.98,90,7.15,110,7.28,120,7.08,135,6.42,147.5,5.667594,150,5.52
10,42.2,6.357952,52,7.12,60,7.48,75,7.77,90,8.03,110,8.16,120,8.02,135,7.49,148,6.67415,150,6.53
12,41.3,6.948289,52,7.73,60,8,75,8.21,90,8.47,110,8.62,120,8.54,135,8.2,148.5,7.529554,150,7.42
14,40.7,7.307412,52,8.06,60,8.29,75,8.5,90,8.7,110,9.02,120,8.95,135,8.64,149.8,8.029853,150,8.02
16,40,7.401659,52,8.21,60,8.46,75,8.73,90,8.84,110,9.43,120,9.41,135,9.05,150,8.4,174,7.390486
20,40,7.479984,52,8.3,60,8.58,75,9.05,90,9.38,110,9.94,120,10.33,135,9.99,150,9,177.9,8.355612

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.21	5.58	5.88	5.89	5.95	5.77	5.17	4.35
8	6.28	6.65	6.98	7.15	7.28	7.08	6.42	5.52
10	7.12	7.48	7.77	8.03	8.16	8.02	7.49	6.53
12	7.73	8	8.21	8.47	8.62	8.54	8.2	7.42
14	8.06	8.29	8.5	8.7	9.02	8.95	8.64	8.02
16	8.21	8.46	8.73	8.84	9.43	9.41	9.05	8.4
20	8.3	8.58	9.05	9.38	9.94	10.33	9.99	9

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.4°	3.33	143.5°	3.77
8	42.7°	4.1	147.5°	4.78
10	42.2°	4.71	148°	5.66
12	41.3°	5.22	148.5°	6.42
14	40.7°	5.54	149.8°	6.94
16	40°	5.67	174°	7.35
20	40°	5.73	177.9°	8.35

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