MARINA SEIS — ORC Rating

GPH

671.5

OSN

649

LOA

9.49 m

Displacement

3712 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.671

Medium

0.9289

High

1.0814

Triple Offshore

Low

0.8634

Medium

1.1414

High

1.2916

Boat Specifications

Dimensions

Length overall: 9.49 m
Beam: 3.22 m
Draft: 1.93 m
Displacement: 3712 kg
Crew weight: 400 kg
Wetted surface: 21.95 m²

Sails

Mainsail: 25.73 m²
Genoa: 25.62 m²
Spinnaker: 60.63 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.

6,42.4,4.265661,52,4.77,60,5.02,75,5.21,90,5.14,110,5.17,120,5.02,135,4.53,146.4,3.985971,150,3.83
8,40.8,5.046268,52,5.69,60,5.96,75,6.16,90,6.2,110,6.29,120,6.12,135,5.59,150,4.87,150.3,4.858217
10,40.3,5.716771,52,6.37,60,6.56,75,6.7,90,6.83,110,6.9,120,6.81,135,6.46,150,5.77,152.2,5.652394
12,38.9,6.090641,52,6.71,60,6.86,75,7,90,7.15,110,7.29,120,7.21,135,6.94,150,6.51,157.3,6.200286
14,38,6.218189,52,6.87,60,7.04,75,7.23,90,7.3,110,7.68,120,7.61,135,7.31,150,6.95,180,6.34
16,37.6,6.272958,52,6.94,60,7.13,75,7.43,90,7.56,110,8.05,120,8.05,135,7.72,150,7.29,180,6.82
20,38.2,6.286132,52,6.96,60,7.19,75,7.64,90,8.04,110,8.47,120,8.9,135,8.66,150,8.08,180,7.5

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.77	5.02	5.21	5.14	5.17	5.02	4.53	3.83
8	5.69	5.96	6.16	6.2	6.29	6.12	5.59	4.87
10	6.37	6.56	6.7	6.83	6.9	6.81	6.46	5.77
12	6.71	6.86	7	7.15	7.29	7.21	6.94	6.51
14	6.87	7.04	7.23	7.3	7.68	7.61	7.31	6.95
16	6.94	7.13	7.43	7.56	8.05	8.05	7.72	7.29
20	6.96	7.19	7.64	8.04	8.47	8.9	8.66	8.08

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	3.15	146.4°	3.32
8	40.8°	3.82	150.3°	4.22
10	40.3°	4.36	152.2°	5
12	38.9°	4.74	157.3°	5.72
14	38°	4.9	180°	6.34
16	37.6°	4.97	180°	6.82
20	38.2°	4.94	180°	7.5

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