GRUÑON II — ORC Rating

GPH

673.3

OSN

653.4

LOA

9.49 m

Displacement

3809 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.599

Medium

0.8186

High

0.9364

Triple Offshore

Low

0.7738

Medium

1.0088

High

1.1249

Boat Specifications

Dimensions

Length overall: 9.49 m
Beam: 3.22 m
Draft: 1.93 m
Displacement: 3809 kg
Crew weight: 395 kg
Wetted surface: 22.17 m²

Sails

Mainsail: 25.75 m²
Genoa: 27.9 m²
Spinnaker: 64.28 m²
Asymmetric spinnaker: 57.96 m²

Design

Type: FIRST 31.7
Builder: BENETEAU
Designer: FINOT
Year built: 1998

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.

6,42.8,4.320391,52,4.85,60,5.12,75,5.34,90,5.28,110,5.23,120,5.07,135,4.58,146,4.016706,150,3.85
8,40.9,5.06712,52,5.73,60,6.01,75,6.23,90,6.25,110,6.32,120,6.17,135,5.63,150,4.884383
10,40.5,5.694327,52,6.36,60,6.56,75,6.72,90,6.83,110,6.91,120,6.83,135,6.5,150,5.8,151,5.739637
12,39.8,6.013405,52,6.65,60,6.82,75,6.99,90,7.12,110,7.28,120,7.22,135,6.98,150,6.55,157,6.246572
14,39.4,6.108185,52,6.74,60,6.94,75,7.18,90,7.28,110,7.63,120,7.62,135,7.34,150,6.97,178,6.373883
16,39.4,6.134068,52,6.78,60,6.99,75,7.31,90,7.52,110,7.96,120,8.04,135,7.76,150,7.31,180,6.84
20,40.1,6.131349,52,6.76,60,7,75,7.38,90,7.88,110,8.37,120,8.78,135,8.71,150,8.11,180,7.52

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.85	5.12	5.34	5.28	5.23	5.07	4.58	3.85
8	5.73	6.01	6.23	6.25	6.32	6.17	5.63	4.88
10	6.36	6.56	6.72	6.83	6.91	6.83	6.5	5.8
12	6.65	6.82	6.99	7.12	7.28	7.22	6.98	6.55
14	6.74	6.94	7.18	7.28	7.63	7.62	7.34	6.97
16	6.78	6.99	7.31	7.52	7.96	8.04	7.76	7.31
20	6.76	7	7.38	7.88	8.37	8.78	8.71	8.11

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.17	146°	3.33
8	40.9°	3.83	150°	4.23
10	40.5°	4.33	151°	5.02
12	39.8°	4.62	157°	5.75
14	39.4°	4.72	178°	6.37
16	39.4°	4.74	180°	6.84
20	40.1°	4.69	180°	7.52

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