TALLY HO — ORC Rating

GPH

667.7

OSN

646.5

LOA

9.5 m

Displacement

3871 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6787

Medium

0.9335

High

1.0765

Triple Offshore

Low

0.8738

Medium

1.146

High

1.2869

Boat Specifications

Dimensions

Length overall: 9.5 m
Beam: 3.23 m
Draft: 1.92 m
Displacement: 3871 kg
Crew weight: 520 kg
Wetted surface: 22.17 m²

Sails

Mainsail: 26.92 m²
Genoa: 29.38 m²
Spinnaker: 58.31 m²
Asymmetric spinnaker: 0 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.

6,42.5,4.36742,52,4.88,60,5.14,75,5.35,90,5.29,110,5.18,120,5.02,135,4.53,146.6,3.988751,150,3.84
8,40.9,5.1465,52,5.81,60,6.09,75,6.29,90,6.25,110,6.28,120,6.12,135,5.57,150,4.88,150.6,4.855295
10,40.4,5.817173,52,6.46,60,6.64,75,6.77,90,6.84,110,6.9,120,6.8,135,6.43,150,5.76,153,5.622854
12,38.8,6.12058,52,6.75,60,6.9,75,7.05,90,7.15,110,7.28,120,7.19,135,6.92,150,6.5,157.9,6.162789
14,38.1,6.213982,52,6.87,60,7.05,75,7.27,90,7.34,110,7.67,120,7.58,135,7.28,150,6.94,180,6.35
16,37.9,6.260423,52,6.92,60,7.11,75,7.44,90,7.61,110,8.04,120,8,135,7.67,150,7.27,180,6.82
20,38.7,6.25296,52,6.93,60,7.15,75,7.58,90,8.05,110,8.44,120,8.85,135,8.58,150,8.03,180,7.48

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.88	5.14	5.35	5.29	5.18	5.02	4.53	3.84
8	5.81	6.09	6.29	6.25	6.28	6.12	5.57	4.88
10	6.46	6.64	6.77	6.84	6.9	6.8	6.43	5.76
12	6.75	6.9	7.05	7.15	7.28	7.19	6.92	6.5
14	6.87	7.05	7.27	7.34	7.67	7.58	7.28	6.94
16	6.92	7.11	7.44	7.61	8.04	8	7.67	7.27
20	6.93	7.15	7.58	8.05	8.44	8.85	8.58	8.03

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.5°	3.22	146.6°	3.33
8	40.9°	3.89	150.6°	4.23
10	40.4°	4.43	153°	5.01
12	38.8°	4.77	157.9°	5.71
14	38.1°	4.89	180°	6.35
16	37.9°	4.94	180°	6.82
20	38.7°	4.88	180°	7.48

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