Spin Off — ORC Rating

GPH

667.7

OSN

647.2

LOA

9.85 m

Displacement

3839 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6779

Medium

0.9314

High

1.0754

Triple Offshore

Low

0.8757

Medium

1.1444

High

1.2855

Boat Specifications

Dimensions

Length overall: 9.85 m
Beam: 3.22 m
Draft: 1.94 m
Displacement: 3839 kg
Crew weight: 585 kg
Wetted surface: 22.19 m²

Sails

Mainsail: 24.98 m²
Genoa: 31.23 m²
Spinnaker: 61.63 m²
Asymmetric spinnaker: 57.09 m²

Design

Type: FIRST 31.7 LR
Builder: Beneteau
Designer: Groupe 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.

6,42.7,4.395069,52,4.94,60,5.22,75,5.43,90,5.35,110,5.2,120,5.01,135,4.52,146.2,3.983227,150,3.82
8,41,5.167551,52,5.84,60,6.12,75,6.33,90,6.3,110,6.3,120,6.11,135,5.57,150,4.85,150.3,4.835192
10,40.4,5.804042,52,6.44,60,6.63,75,6.78,90,6.84,110,6.89,120,6.8,135,6.44,150,5.74,151.9,5.645446
12,38.9,6.12919,52,6.74,60,6.9,75,7.04,90,7.17,110,7.27,120,7.19,135,6.93,150,6.49,157.4,6.174108
14,38.1,6.213982,52,6.86,60,7.04,75,7.26,90,7.36,110,7.65,120,7.58,135,7.29,150,6.93,175.7,6.33784
16,37.8,6.251938,52,6.91,60,7.11,75,7.42,90,7.6,110,8.02,120,8.01,135,7.68,150,7.26,180,6.8
20,38.6,6.257034,52,6.92,60,7.14,75,7.55,90,8.02,110,8.52,120,8.85,135,8.59,150,8.02,180,7.46

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.94	5.22	5.43	5.35	5.2	5.01	4.52	3.82
8	5.84	6.12	6.33	6.3	6.3	6.11	5.57	4.85
10	6.44	6.63	6.78	6.84	6.89	6.8	6.44	5.74
12	6.74	6.9	7.04	7.17	7.27	7.19	6.93	6.49
14	6.86	7.04	7.26	7.36	7.65	7.58	7.29	6.93
16	6.91	7.11	7.42	7.6	8.02	8.01	7.68	7.26
20	6.92	7.14	7.55	8.02	8.52	8.85	8.59	8.02

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.7°	3.23	146.2°	3.31
8	41°	3.9	150.3°	4.2
10	40.4°	4.42	151.9°	4.98
12	38.9°	4.77	157.4°	5.7
14	38.1°	4.89	175.7°	6.32
16	37.8°	4.94	180°	6.8
20	38.6°	4.89	180°	7.46

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