Bruorskip — ORC Rating

GPH

684.1

OSN

660.1

LOA

9.61 m

Displacement

3887 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5778

Medium

0.8079

High

0.9498

Triple Offshore

Low

0.7481

Medium

0.9986

High

1.1359

Boat Specifications

Dimensions

Length overall: 9.61 m
Beam: 3.21 m
Draft: 1.95 m
Displacement: 3887 kg
Crew weight: 450 kg
Wetted surface: 21.95 m²

Sails

Mainsail: 25.89 m²
Genoa: 19.98 m²
Spinnaker: 61.63 m²
Asymmetric spinnaker: 0 m²

Design

Type: First 31.7
Builder: Beneteau
Designer: Finot
Year built: 1998
Stability index: 111.3

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.

6,44.1,4.135763,52,4.55,60,4.82,75,5.01,90,5.13,110,5.18,120,5.01,135,4.51,146,3.968457,150,3.8
8,41.8,4.869372,52,5.46,60,5.74,75,5.96,90,6.2,110,6.31,120,6.14,135,5.58,150,4.86,150.2,4.851541
10,40.8,5.468992,52,6.14,60,6.39,75,6.57,90,6.83,110,6.93,120,6.84,135,6.47,150,5.78,152,5.674176
12,40,5.952657,52,6.58,60,6.75,75,6.9,90,7.13,110,7.31,120,7.24,135,6.98,150,6.54,157,6.235709
14,39,6.163578,52,6.79,60,6.96,75,7.14,90,7.27,110,7.69,120,7.65,135,7.35,150,6.99,168.5,6.48009
16,38.7,6.21452,52,6.87,60,7.08,75,7.33,90,7.45,110,8.02,120,8.08,135,7.78,150,7.34,177.2,6.838164
20,38.8,6.223231,52,6.9,60,7.13,75,7.56,90,7.95,110,8.41,120,8.85,135,8.76,150,8.17,178.1,7.524137

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.55	4.82	5.01	5.13	5.18	5.01	4.51	3.8
8	5.46	5.74	5.96	6.2	6.31	6.14	5.58	4.86
10	6.14	6.39	6.57	6.83	6.93	6.84	6.47	5.78
12	6.58	6.75	6.9	7.13	7.31	7.24	6.98	6.54
14	6.79	6.96	7.14	7.27	7.69	7.65	7.35	6.99
16	6.87	7.08	7.33	7.45	8.02	8.08	7.78	7.34
20	6.9	7.13	7.56	7.95	8.41	8.85	8.76	8.17

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.1°	2.97	146°	3.29
8	41.8°	3.63	150.2°	4.21
10	40.8°	4.14	152°	5.01
12	40°	4.56	157°	5.74
14	39°	4.79	168.5°	6.35
16	38.7°	4.85	177.2°	6.83
20	38.8°	4.85	178.1°	7.52

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