ZIGZAG: ORC Rating

GPH

571.3

OSN

553.7

LOA

11.99 m

Displacement

6315 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.707

Medium

0.9635

High

1.0939

Triple Offshore

Low

0.9124

Medium

1.1891

High

1.3349

Boat Specifications

Dimensions

Length overall: 11.99 m
Beam: 3.76 m
Draft: 2.39 m
Displacement: 6315 kg
Crew weight: 852 kg
Wetted surface: 32.59 m²

Sails

Mainsail: 47.07 m²
Genoa: 37.59 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 135.24 m²

Design

Type: A-40 Extended Keel
Builder: ARCHAMBAULT
Designer: NIVELT Bernard
Year built: 2003
Stability index: 115.2

Performance data

Polar CSV

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

6,43.2,5.03451,52,5.61,60,5.94,75,6.18,90,6.12,110,6.22,120,6.06,135,5.45,143.4,4.969996,150,4.61
8,41.4,5.999112,52,6.74,60,7.05,75,7.27,90,7.4,110,7.52,120,7.4,135,6.81,146.6,6.049006,150,5.83
10,40.5,6.772698,52,7.47,60,7.67,75,7.81,90,7.92,110,8.15,120,8.08,135,7.75,148.2,7.059715,150,6.93
12,38.7,7.021766,52,7.77,60,7.96,75,8.15,90,8.19,110,8.64,120,8.65,135,8.29,150,7.71,150.7,7.659942
14,37.8,7.112528,52,7.88,60,8.1,75,8.42,90,8.56,110,9,120,9.27,135,8.9,150,8.12,151.1,8.041445
16,37.6,7.169095,52,7.93,60,8.17,75,8.61,90,8.95,110,9.32,120,9.78,135,9.61,150,8.51,171.2,7.528624
20,37.5,7.361159,52,8.07,60,8.29,75,8.8,90,9.5,110,9.93,120,10.61,135,11.39,143,10.643153,150,9.82

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.61	5.94	6.18	6.12	6.22	6.06	5.45	4.61
8	6.74	7.05	7.27	7.4	7.52	7.4	6.81	5.83
10	7.47	7.67	7.81	7.92	8.15	8.08	7.75	6.93
12	7.77	7.96	8.15	8.19	8.64	8.65	8.29	7.71
14	7.88	8.1	8.42	8.56	9	9.27	8.9	8.12
16	7.93	8.17	8.61	8.95	9.32	9.78	9.61	8.51
20	8.07	8.29	8.8	9.5	9.93	10.61	11.39	9.82

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.67	143.4°	3.99
8	41.4°	4.5	146.6°	5.05
10	40.5°	5.15	148.2°	6
12	38.7°	5.48	150.7°	6.68
14	37.8°	5.62	151.1°	7.04
16	37.6°	5.68	171.2°	7.44
20	37.5°	5.84	143°	8.5

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°	5.61	6.74	7.47	7.77	7.88	7.93	8.07
60°	5.94	7.05	7.67	7.96	8.10	8.17	8.29
75°	6.18	7.27	7.81	8.15	8.42	8.61	8.80
90°	6.12	7.40	7.92	8.19	8.56	8.95	9.50
110°	6.22	7.52	8.15	8.64	9.00	9.32	9.93
120°	6.06	7.40	8.08	8.65	9.27	9.78	10.61
135°	5.45	6.81	7.75	8.29	8.90	9.61	11.39
150°	4.61	5.83	6.93	7.71	8.12	8.51	9.82