ISOBAR: ORC Rating

GPH

604.1

OSN

584.7

LOA

11.924 m

Displacement

7387 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.748

Medium

1.0301

High

1.2017

Triple Offshore

Low

0.9637

Medium

1.2668

High

1.4302

Boat Specifications

Dimensions

Length overall: 11.924 m
Beam: 3.77 m
Draft: 2.43 m
Displacement: 7387 kg
Crew weight: 800 kg
Wetted surface: 31.8 m²

Sails

Mainsail: 48.14 m²
Genoa: 33.94 m²
Spinnaker: 107.06 m²
Asymmetric spinnaker: 86.84 m²

Design

Type: FIRST 40.7
Builder: BENETEAU
Designer: FARR
Year built: 1998

Performance data

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into Offwind or compatible navigation software.

6,42.2,4.724593,52,5.29,60,5.56,75,5.78,90,5.79,110,5.8,120,5.64,135,5.1,144.6,4.57597,150,4.31
8,40.7,5.592676,52,6.31,60,6.61,75,6.83,90,6.98,110,7.04,120,6.87,135,6.29,149,5.483177,150,5.42
10,40.3,6.359252,52,7.07,60,7.28,75,7.42,90,7.61,110,7.69,120,7.59,135,7.22,150,6.42,150.6,6.381901
12,38.6,6.73047,52,7.44,60,7.6,75,7.75,90,7.94,110,8.09,120,8.02,135,7.73,150,7.23,155.6,6.939841
14,37.6,6.866176,52,7.61,60,7.79,75,7.99,90,8.12,110,8.47,120,8.45,135,8.12,150,7.71,170.3,7.060947
16,37.7,6.963898,52,7.67,60,7.88,75,8.19,90,8.34,110,8.83,120,8.89,135,8.55,150,8.07,180,7.51
20,37.4,7.061804,52,7.73,60,7.94,75,8.39,90,8.83,110,9.29,120,9.66,135,9.52,150,8.9,180,8.25

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.29	5.56	5.78	5.79	5.8	5.64	5.1	4.31
8	6.31	6.61	6.83	6.98	7.04	6.87	6.29	5.42
10	7.07	7.28	7.42	7.61	7.69	7.59	7.22	6.42
12	7.44	7.6	7.75	7.94	8.09	8.02	7.73	7.23
14	7.61	7.79	7.99	8.12	8.47	8.45	8.12	7.71
16	7.67	7.88	8.19	8.34	8.83	8.89	8.55	8.07
20	7.73	7.94	8.39	8.83	9.29	9.66	9.52	8.9

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.2°	3.5	144.6°	3.73
8	40.7°	4.24	149°	4.7
10	40.3°	4.85	150.6°	5.56
12	38.6°	5.26	155.6°	6.32
14	37.6°	5.44	170.3°	6.96
16	37.7°	5.51	180°	7.51
20	37.4°	5.61	180°	8.25

VPP POLAR · BOAT SPEED BY TWAKT

TRUE WIND ANGLE —

READ AT ANGLE

Hover or tap the chart, or use the slider, to read boat speeds.

True wind speed 6 kt8 kt10 kt12 kt14 kt16 kt20 kt

Data table

Boat speed by true wind angle and true wind speed
TWA	Boat speed in 6 kt (kt)	Boat speed in 8 kt (kt)	Boat speed in 10 kt (kt)	Boat speed in 12 kt (kt)	Boat speed in 14 kt (kt)	Boat speed in 16 kt (kt)	Boat speed in 20 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	5.29	6.31	7.07	7.44	7.61	7.67	7.73
60°	5.56	6.61	7.28	7.60	7.79	7.88	7.94
75°	5.78	6.83	7.42	7.75	7.99	8.19	8.39
90°	5.79	6.98	7.61	7.94	8.12	8.34	8.83
110°	5.80	7.04	7.69	8.09	8.47	8.83	9.29
120°	5.64	6.87	7.59	8.02	8.45	8.89	9.66
135°	5.10	6.29	7.22	7.73	8.12	8.55	9.52
150°	4.31	5.42	6.42	7.23	7.71	8.07	8.90