TIRRENO — ORC Rating | RegattaPages

GPH

619.5

OSN

600.3

LOA

12.8 m

Displacement

9472 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6568

Medium

0.8938

High

1.0291

Triple Offshore

Low

0.8446

Medium

1.0952

High

1.2194

Boat Specifications

Dimensions

Length overall: 12.8 m
Beam: 3.98 m
Draft: 2.21 m
Displacement: 9472 kg
Crew weight: 732 kg
Wetted surface: 34.6 m²

Sails

Mainsail: 38.09 m²
Genoa: 58.46 m²
Spinnaker: 134.19 m²
Asymmetric spinnaker: 112.79 m²

Design

Type: First 42
Builder: BENETEAU
Designer: GERMAN FRERS
Year built: 1983

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.

6,42.9,4.859784,52,5.41,60,5.68,75,5.84,90,5.71,110,5.58,120,5.45,135,4.91,144.2,4.389297,150,4.11
8,41,5.684306,52,6.34,60,6.58,75,6.74,90,6.67,110,6.74,120,6.62,135,6.11,148.7,5.325008,150,5.25
10,39.7,6.238631,52,6.92,60,7.11,75,7.25,90,7.24,110,7.41,120,7.36,135,7.02,149.6,6.295552,150,6.27
12,39.1,6.546,52,7.22,60,7.39,75,7.55,90,7.58,110,7.79,120,7.79,135,7.56,150,7.07,155.6,6.797091
14,38.3,6.651576,52,7.37,60,7.56,75,7.75,90,7.82,110,8.08,120,8.12,135,7.93,150,7.55,163.7,7.063933
16,38,6.725797,52,7.45,60,7.64,75,7.89,90,8.02,110,8.33,120,8.41,135,8.27,150,7.9,175.4,7.313558
20,37.8,6.783479,52,7.52,60,7.73,75,8.05,90,8.32,110,8.67,120,8.94,135,8.95,150,8.54,178.6,7.992386
24,38.2,6.782405,52,7.53,60,7.76,75,8.15,90,8.51,110,8.93,120,9.34,135,9.65,150,9.23,178.1,8.594725

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.41	5.68	5.84	5.71	5.58	5.45	4.91	4.11
8	6.34	6.58	6.74	6.67	6.74	6.62	6.11	5.25
10	6.92	7.11	7.25	7.24	7.41	7.36	7.02	6.27
12	7.22	7.39	7.55	7.58	7.79	7.79	7.56	7.07
14	7.37	7.56	7.75	7.82	8.08	8.12	7.93	7.55
16	7.45	7.64	7.89	8.02	8.33	8.41	8.27	7.9
20	7.52	7.73	8.05	8.32	8.67	8.94	8.95	8.54
24	7.53	7.76	8.15	8.51	8.93	9.34	9.65	9.23

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.9°	3.56	144.2°	3.56
8	41°	4.29	148.7°	4.55
10	39.7°	4.8	149.6°	5.43
12	39.1°	5.08	155.6°	6.19
14	38.3°	5.22	163.7°	6.78
16	38°	5.3	175.4°	7.29
20	37.8°	5.36	178.6°	7.99
24	38.2°	5.33	178.1°	8.59

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