Bonny Staf: ORC Rating

GPH

600.4

OSN

583.1

LOA

11.924 m

Displacement

7528 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6766

Medium

0.9172

High

1.05

Triple Offshore

Low

0.8744

Medium

1.1282

High

1.2567

Boat Specifications

Dimensions

Length overall: 11.924 m
Beam: 3.77 m
Draft: 1.91 m
Displacement: 7528 kg
Crew weight: 734 kg
Wetted surface: 32.37 m²

Sails

Mainsail: 48.84 m²
Genoa: 45.2 m²
Spinnaker: 107.36 m²
Asymmetric spinnaker: 0 m²

Design

Type: FIRST 40.7 SD
Builder: BENETEAU
Designer: B.FARR
Year built: 1997
Stability index: 123.5

Performance data

Polar CSV

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

6,43.8,5.043226,52,5.6,60,5.92,75,6.14,90,6.03,110,5.81,120,5.64,135,5.07,143.3,4.589813,150,4.25
8,42,5.947697,52,6.61,60,6.87,75,7.04,90,7,110,7,120,6.85,135,6.29,147.8,5.554287,150,5.42
10,40.2,6.480788,52,7.18,60,7.38,75,7.52,90,7.53,110,7.66,120,7.58,135,7.19,150,6.44,151.4,6.355476
12,39.4,6.716416,52,7.45,60,7.64,75,7.82,90,7.87,110,8.08,120,8.03,135,7.73,150,7.22,156.8,6.897787
14,39,6.832693,52,7.57,60,7.78,75,8.04,90,8.16,110,8.44,120,8.44,135,8.15,150,7.73,166.4,7.17107
16,38.8,6.890464,52,7.64,60,7.87,75,8.2,90,8.41,110,8.74,120,8.83,135,8.58,150,8.12,177.2,7.518977
20,39.6,7.008316,52,7.7,60,7.95,75,8.38,90,8.79,110,9.12,120,9.54,135,9.48,150,8.93,179,8.281261

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.6	5.92	6.14	6.03	5.81	5.64	5.07	4.25
8	6.61	6.87	7.04	7	7	6.85	6.29	5.42
10	7.18	7.38	7.52	7.53	7.66	7.58	7.19	6.44
12	7.45	7.64	7.82	7.87	8.08	8.03	7.73	7.22
14	7.57	7.78	8.04	8.16	8.44	8.44	8.15	7.73
16	7.64	7.87	8.2	8.41	8.74	8.83	8.58	8.12
20	7.7	7.95	8.38	8.79	9.12	9.54	9.48	8.93

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.8°	3.64	143.3°	3.68
8	42°	4.42	147.8°	4.7
10	40.2°	4.95	151.4°	5.58
12	39.4°	5.19	156.8°	6.34
14	39°	5.31	166.4°	6.97
16	38.8°	5.37	177.2°	7.51
20	39.6°	5.4	179°	8.28

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°	5.60	6.61	7.18	7.45	7.57	7.64	7.70
60°	5.92	6.87	7.38	7.64	7.78	7.87	7.95
75°	6.14	7.04	7.52	7.82	8.04	8.20	8.38
90°	6.03	7.00	7.53	7.87	8.16	8.41	8.79
110°	5.81	7.00	7.66	8.08	8.44	8.74	9.12
120°	5.64	6.85	7.58	8.03	8.44	8.83	9.54
135°	5.07	6.29	7.19	7.73	8.15	8.58	9.48
150°	4.25	5.42	6.44	7.22	7.73	8.12	8.93