MARINA SEIS — ORC Rating

GPH

677.5

OSN

654.9

LOA

9.61 m

Displacement

3837 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5891

Medium

0.8163

High

0.9428

Triple Offshore

Low

0.7612

Medium

1.0069

High

1.1302

Boat Specifications

Dimensions

Length overall: 9.61 m
Beam: 3.21 m
Draft: 1.94 m
Displacement: 3837 kg
Crew weight: 400 kg
Wetted surface: 21.63 m²

Sails

Mainsail: 25.41 m²
Genoa: 25.28 m²
Spinnaker: 59.6 m²
Asymmetric spinnaker: 0 m²

Design

Type: FIRST 31.7
Builder: BENETEAU
Designer: FINOT
Year built: 1998
Stability index: 106

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.

6,43.2,4.238866,52,4.74,60,5.02,75,5.22,90,5.14,110,5.17,120,5,135,4.48,146,3.956395,150,3.79
8,41.4,5.025922,52,5.65,60,5.93,75,6.15,90,6.18,110,6.29,120,6.13,135,5.57,150,4.85,150.2,4.840018
10,40.6,5.650154,52,6.32,60,6.53,75,6.7,90,6.82,110,6.92,120,6.84,135,6.46,150,5.77,152.3,5.647206
12,39.9,6.035206,52,6.66,60,6.84,75,6.99,90,7.09,110,7.3,120,7.24,135,6.97,150,6.53,157,6.224845
14,39.3,6.138218,52,6.78,60,6.98,75,7.2,90,7.3,110,7.67,120,7.64,135,7.35,150,6.99,168.5,6.469885
16,39,6.163578,52,6.83,60,7.04,75,7.36,90,7.55,110,7.95,120,8.07,135,7.78,150,7.35,178.4,6.832664
20,39.4,6.185832,52,6.83,60,7.06,75,7.47,90,7.96,110,8.32,120,8.75,135,8.75,150,8.18,178.4,7.532937

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.74	5.02	5.22	5.14	5.17	5	4.48	3.79
8	5.65	5.93	6.15	6.18	6.29	6.13	5.57	4.85
10	6.32	6.53	6.7	6.82	6.92	6.84	6.46	5.77
12	6.66	6.84	6.99	7.09	7.3	7.24	6.97	6.53
14	6.78	6.98	7.2	7.3	7.67	7.64	7.35	6.99
16	6.83	7.04	7.36	7.55	7.95	8.07	7.78	7.35
20	6.83	7.06	7.47	7.96	8.32	8.75	8.75	8.18

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.09	146°	3.28
8	41.4°	3.77	150.2°	4.2
10	40.6°	4.29	152.3°	5
12	39.9°	4.63	157°	5.73
14	39.3°	4.75	168.5°	6.34
16	39°	4.79	178.4°	6.83
20	39.4°	4.78	178.4°	7.53

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