MAR DE VENTO: ORC Rating

GPH

692.8

OSN

667.9

LOA

11.99 m

Displacement

9652 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5704

Medium

0.7919

High

0.9521

Triple Offshore

Low

0.7337

Medium

0.9863

High

1.1357

Boat Specifications

Dimensions

Length overall: 11.99 m
Beam: 3.74 m
Draft: 2.06 m
Displacement: 9652 kg
Crew weight: 450 kg
Wetted surface: 31.53 m²

Sails

Mainsail: 32.92 m²
Genoa: 41 m²
Spinnaker: 102.56 m²
Asymmetric spinnaker: 0 m²

Design

Type: NORTH WIND 40
Builder: NORTH WIND
Designer: PRIMROSE ANGUS
Year built: 1979
Stability index: 129.4

Performance data

Polar CSV

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

6,44.4,4.030945,52,4.46,60,4.73,75,4.91,90,4.9,110,5.04,120,4.92,135,4.49,146.6,3.976772,150,3.84
8,42.3,4.759129,52,5.3,60,5.57,75,5.78,90,5.94,110,6.14,120,6,135,5.5,150,4.88,150.7,4.839065
10,41.4,5.319212,52,6,60,6.3,75,6.53,90,6.77,110,6.93,120,6.85,135,6.43,150,5.74,152.9,5.594168
12,41.8,5.888855,52,6.55,60,6.78,75,6.95,90,7.17,110,7.33,120,7.28,135,7.03,150,6.54,154.7,6.315795
14,41.4,6.265739,52,6.86,60,7.04,75,7.2,90,7.33,110,7.62,120,7.59,135,7.38,150,7.06,162.8,6.626341
16,41.1,6.449358,52,7.03,60,7.21,75,7.38,90,7.44,110,7.88,120,7.89,135,7.69,150,7.38,176.6,6.862078
20,40.6,6.54575,52,7.16,60,7.38,75,7.67,90,7.81,110,8.16,120,8.42,135,8.33,150,7.97,179,7.501142

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.46	4.73	4.91	4.9	5.04	4.92	4.49	3.84
8	5.3	5.57	5.78	5.94	6.14	6	5.5	4.88
10	6	6.3	6.53	6.77	6.93	6.85	6.43	5.74
12	6.55	6.78	6.95	7.17	7.33	7.28	7.03	6.54
14	6.86	7.04	7.2	7.33	7.62	7.59	7.38	7.06
16	7.03	7.21	7.38	7.44	7.88	7.89	7.69	7.38
20	7.16	7.38	7.67	7.81	8.16	8.42	8.33	7.97

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.4°	2.88	146.6°	3.32
8	42.3°	3.52	150.7°	4.22
10	41.4°	3.99	152.9°	4.98
12	41.8°	4.39	154.7°	5.71
14	41.4°	4.7	162.8°	6.33
16	41.1°	4.86	176.6°	6.85
20	40.6°	4.97	179°	7.5

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°	4.46	5.30	6.00	6.55	6.86	7.03	7.16
60°	4.73	5.57	6.30	6.78	7.04	7.21	7.38
75°	4.91	5.78	6.53	6.95	7.20	7.38	7.67
90°	4.90	5.94	6.77	7.17	7.33	7.44	7.81
110°	5.04	6.14	6.93	7.33	7.62	7.88	8.16
120°	4.92	6.00	6.85	7.28	7.59	7.89	8.42
135°	4.49	5.50	6.43	7.03	7.38	7.69	8.33
150°	3.84	4.88	5.74	6.54	7.06	7.38	7.97