Cosa Nostra — ORC Rating

GPH

608.3

OSN

591.1

LOA

9.55 m

Displacement

2870 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6819

Medium

0.8975

High

1.0143

Triple Offshore

Low

0.8727

Medium

1.1069

High

1.2433

Boat Specifications

Dimensions

Length overall: 9.55 m
Beam: 2.96 m
Draft: 2.09 m
Displacement: 2870 kg
Crew weight: 648 kg
Wetted surface: 20.76 m²

Sails

Mainsail: 32.83 m²
Genoa: 31.27 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 86.32 m²

Design

Type: GRAND SURPRISE
Builder: ARCHAMBAULT
Designer: JOUBERT-NIVELT
Year built: 1999
Stability index: 104

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.

6,42.4,4.996917,52,5.58,60,5.85,75,6.01,90,5.85,110,5.82,120,5.65,135,5.07,143.9,4.604018,150,4.29
8,40,5.796008,52,6.48,60,6.69,75,6.82,90,6.79,110,6.91,120,6.81,135,6.31,147.3,5.597076,150,5.44
10,38.2,6.222507,52,6.94,60,7.11,75,7.26,90,7.28,110,7.53,120,7.47,135,7.12,148.7,6.495339,150,6.41
12,37.2,6.377664,52,7.12,60,7.34,75,7.61,90,7.71,110,8.04,120,8.11,135,7.73,149.8,7.069511,150,7.06
14,36.9,6.490058,52,7.24,60,7.47,75,7.85,90,8.1,110,8.41,120,8.69,135,8.4,147.8,7.693279,150,7.52
16,36.6,6.539469,52,7.31,60,7.57,75,8.02,90,8.42,110,8.73,120,9.21,135,9.14,145.7,8.425148,150,8.03
20,37.2,6.641307,52,7.4,60,7.7,75,8.23,90,8.82,110,9.34,120,10.04,135,10.91,142.6,10.309478,150,9.46

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.58	5.85	6.01	5.85	5.82	5.65	5.07	4.29
8	6.48	6.69	6.82	6.79	6.91	6.81	6.31	5.44
10	6.94	7.11	7.26	7.28	7.53	7.47	7.12	6.41
12	7.12	7.34	7.61	7.71	8.04	8.11	7.73	7.06
14	7.24	7.47	7.85	8.1	8.41	8.69	8.4	7.52
16	7.31	7.57	8.02	8.42	8.73	9.21	9.14	8.03
20	7.4	7.7	8.23	8.82	9.34	10.04	10.91	9.46

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	3.69	143.9°	3.72
8	40°	4.44	147.3°	4.71
10	38.2°	4.89	148.7°	5.55
12	37.2°	5.08	149.8°	6.11
14	36.9°	5.19	147.8°	6.51
16	36.6°	5.25	145.7°	6.96
20	37.2°	5.29	142.6°	8.19

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