TIRRENO — ORC Rating | RegattaPages

GPH

626.6

OSN

607.2

LOA

12.8 m

Displacement

9436 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6409

Medium

0.8774

High

1.0254

Triple Offshore

Low

0.8266

Medium

1.0853

High

1.2213

Boat Specifications

Dimensions

Length overall: 12.8 m
Beam: 3.98 m
Draft: 2.21 m
Displacement: 9436 kg
Crew weight: 700 kg
Wetted surface: 34.39 m²

Sails

Mainsail: 35.85 m²
Genoa: 58.46 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 118.74 m²

Design

Type: First 42
Builder: BENETEAU
Designer: GERMAN FRERS
Year built: 1983
Stability index: 116.7

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.

6,43.2,4.636688,52,5.17,60,5.47,75,5.7,90,5.62,110,5.54,120,5.39,135,4.9,144.3,4.433042,150,4.16
8,41.4,5.425863,52,6.12,60,6.43,75,6.69,90,6.63,110,6.74,120,6.57,135,6.03,148.4,5.318606,150,5.23
10,41.4,6.159088,52,6.86,60,7.1,75,7.26,90,7.32,110,7.45,120,7.36,135,7,149.3,6.210369,150,6.16
12,40.6,6.598432,52,7.23,60,7.42,75,7.57,90,7.67,110,7.83,120,7.78,135,7.54,150,7,153.8,6.798488
14,39.4,6.729357,52,7.41,60,7.59,75,7.78,90,7.84,110,8.14,120,8.13,135,7.89,150,7.5,162.8,7.045067
16,38.8,6.800644,52,7.49,60,7.69,75,7.94,90,8.06,110,8.44,120,8.5,135,8.24,150,7.84,175.4,7.283461
20,39.3,6.913572,52,7.55,60,7.77,75,8.14,90,8.44,110,8.79,120,9.12,135,9,150,8.5,179,7.941209

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.17	5.47	5.7	5.62	5.54	5.39	4.9	4.16
8	6.12	6.43	6.69	6.63	6.74	6.57	6.03	5.23
10	6.86	7.1	7.26	7.32	7.45	7.36	7	6.16
12	7.23	7.42	7.57	7.67	7.83	7.78	7.54	7
14	7.41	7.59	7.78	7.84	8.14	8.13	7.89	7.5
16	7.49	7.69	7.94	8.06	8.44	8.5	8.24	7.84
20	7.55	7.77	8.14	8.44	8.79	9.12	9	8.5

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.38	144.3°	3.6
8	41.4°	4.07	148.4°	4.53
10	41.4°	4.62	149.3°	5.34
12	40.6°	5.01	153.8°	6.1
14	39.4°	5.2	162.8°	6.73
16	38.8°	5.3	175.4°	7.26
20	39.3°	5.35	179°	7.94

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