ILTSCHI — ORC Rating | RegattaPages

GPH

679.4

OSN

656.6

LOA

9.61 m

Displacement

3860 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5855

Medium

0.8131

High

0.9434

Triple Offshore

Low

0.7581

Medium

1.0041

High

1.1309

Boat Specifications

Dimensions

Length overall: 9.61 m
Beam: 3.21 m
Draft: 1.94 m
Displacement: 3860 kg
Crew weight: 400 kg
Wetted surface: 21.73 m²

Sails

Mainsail: 26.13 m²
Genoa: 21.03 m²
Spinnaker: 65.92 m²
Asymmetric spinnaker: 0 m²

Design

Type: FIRST 31.7
Builder: BENETEAU
Designer: FINOT
Year built: 1998
Stability index: 106.5

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.

6,44.1,4.205388,52,4.63,60,4.91,75,5.1,90,5.16,110,5.25,120,5.08,135,4.58,145.7,4.030997,150,3.84
8,41.8,4.936443,52,5.53,60,5.81,75,6.04,90,6.23,110,6.36,120,6.22,135,5.67,150,4.9,150.2,4.897637
10,40.8,5.548253,52,6.21,60,6.44,75,6.62,90,6.84,110,6.96,120,6.89,135,6.56,150,5.85,151.1,5.791211
12,40,5.952657,52,6.6,60,6.78,75,6.94,90,7.06,110,7.34,120,7.29,135,7.04,150,6.61,157,6.311754
14,39.4,6.095244,52,6.76,60,6.95,75,7.16,90,7.24,110,7.69,120,7.71,135,7.44,150,7.05,169.4,6.51111
16,39.4,6.15995,52,6.81,60,7.02,75,7.32,90,7.5,110,7.92,120,8.15,135,7.89,150,7.42,177.2,6.888224
20,39.4,6.185832,52,6.84,60,7.03,75,7.46,90,7.94,110,8.3,120,8.75,135,8.91,150,8.29,177.2,7.599072

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.63	4.91	5.1	5.16	5.25	5.08	4.58	3.84
8	5.53	5.81	6.04	6.23	6.36	6.22	5.67	4.9
10	6.21	6.44	6.62	6.84	6.96	6.89	6.56	5.85
12	6.6	6.78	6.94	7.06	7.34	7.29	7.04	6.61
14	6.76	6.95	7.16	7.24	7.69	7.71	7.44	7.05
16	6.81	7.02	7.32	7.5	7.92	8.15	7.89	7.42
20	6.84	7.03	7.46	7.94	8.3	8.75	8.91	8.29

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.1°	3.02	145.7°	3.33
8	41.8°	3.68	150.2°	4.25
10	40.8°	4.2	151.1°	5.07
12	40°	4.56	157°	5.81
14	39.4°	4.71	169.4°	6.4
16	39.4°	4.76	177.2°	6.88
20	39.4°	4.78	177.2°	7.59

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