Fortissimo — ORC Rating

GPH

666.2

OSN

644.7

LOA

9.85 m

Displacement

3717 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5997

Medium

0.8307

High

0.9609

Triple Offshore

Low

0.7765

Medium

1.022

High

1.1497

Boat Specifications

Dimensions

Length overall: 9.85 m
Beam: 3.21 m
Draft: 1.93 m
Displacement: 3717 kg
Crew weight: 581 kg
Wetted surface: 21.85 m²

Sails

Mainsail: 26.56 m²
Genoa: 30.48 m²
Spinnaker: 61.85 m²
Asymmetric spinnaker: 0 m²

Design

Type: First 31.7 LR
Builder: Beneteau
Designer: Groupe Finot
Year built: 1998
Stability index: 106.6

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.

6,43.2,4.389764,52,4.91,60,5.21,75,5.42,90,5.34,110,5.19,120,5.02,135,4.52,146,3.968457,150,3.8
8,41.4,5.185899,52,5.85,60,6.14,75,6.35,90,6.32,110,6.33,120,6.15,135,5.59,150,4.85,150.2,4.840018
10,40.8,5.852086,52,6.47,60,6.66,75,6.81,90,6.86,110,6.95,120,6.86,135,6.49,150,5.78,152,5.674176
12,39.3,6.164063,52,6.77,60,6.93,75,7.09,90,7.18,110,7.33,120,7.26,135,6.99,150,6.55,157.4,6.239099
14,38.4,6.239685,52,6.89,60,7.08,75,7.31,90,7.41,110,7.74,120,7.67,135,7.37,150,7,169.4,6.470415
16,38.2,6.298857,52,6.94,60,7.14,75,7.48,90,7.69,110,8.1,120,8.12,135,7.8,150,7.36,177.2,6.858188
20,38.5,6.286671,52,6.96,60,7.18,75,7.61,90,8.12,110,8.54,120,9,135,8.79,150,8.19,178.1,7.544148

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.91	5.21	5.42	5.34	5.19	5.02	4.52	3.8
8	5.85	6.14	6.35	6.32	6.33	6.15	5.59	4.85
10	6.47	6.66	6.81	6.86	6.95	6.86	6.49	5.78
12	6.77	6.93	7.09	7.18	7.33	7.26	6.99	6.55
14	6.89	7.08	7.31	7.41	7.74	7.67	7.37	7
16	6.94	7.14	7.48	7.69	8.1	8.12	7.8	7.36
20	6.96	7.18	7.61	8.12	8.54	9	8.79	8.19

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.2	146°	3.29
8	41.4°	3.89	150.2°	4.2
10	40.8°	4.43	152°	5.01
12	39.3°	4.77	157.4°	5.76
14	38.4°	4.89	169.4°	6.36
16	38.2°	4.95	177.2°	6.85
20	38.5°	4.92	178.1°	7.54

Loading polar chart…