MISTY: ORC Rating

GPH

631.8

OSN

615.9

LOA

12.314 m

Displacement

8566 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6296

Medium

0.858

High

1.0032

Triple Offshore

Low

0.8235

Medium

1.0744

High

1.2083

Boat Specifications

Dimensions

Length overall: 12.314 m
Beam: 3.68 m
Draft: 1.64 m
Displacement: 8566 kg
Crew weight: 726 kg
Wetted surface: 33.28 m²

Sails

Mainsail: 43.09 m²
Genoa: 54.31 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 82.11 m²

Design

Type: J-40 WK
Builder: TPI
Designer: JOHNSTONE
Year built: 1986
Stability index: 124.6

Performance data

Polar CSV

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

6,45.6,4.773724,52,5.2,60,5.57,75,5.89,90,5.86,110,5.66,120,5.35,135,4.81,144.2,4.32765,150,4.06
8,44.4,5.612531,52,6.17,60,6.56,75,6.86,90,6.95,110,6.79,120,6.49,135,5.93,148.4,5.224679,150,5.14
10,44.2,6.304831,52,6.9,60,7.18,75,7.37,90,7.51,110,7.44,120,7.31,135,6.87,150,6.06,151.1,5.996816
12,43.2,6.6258,52,7.22,60,7.46,75,7.64,90,7.82,110,7.8,120,7.74,135,7.46,150,6.9,154.1,6.681061
14,42.3,6.773647,52,7.37,60,7.59,75,7.83,90,8.06,110,8.12,120,8.08,135,7.81,150,7.44,163.7,6.949326
16,41.4,6.825656,52,7.44,60,7.66,75,7.96,90,8.26,110,8.45,120,8.43,135,8.15,150,7.78,177.2,7.238642
20,40.8,6.842845,52,7.5,60,7.73,75,8.11,90,8.52,110,9.04,120,9.16,135,8.91,150,8.43,179,7.921206

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.2	5.57	5.89	5.86	5.66	5.35	4.81	4.06
8	6.17	6.56	6.86	6.95	6.79	6.49	5.93	5.14
10	6.9	7.18	7.37	7.51	7.44	7.31	6.87	6.06
12	7.22	7.46	7.64	7.82	7.8	7.74	7.46	6.9
14	7.37	7.59	7.83	8.06	8.12	8.08	7.81	7.44
16	7.44	7.66	7.96	8.26	8.45	8.43	8.15	7.78
20	7.5	7.73	8.11	8.52	9.04	9.16	8.91	8.43

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	45.6°	3.34	144.2°	3.51
8	44.4°	4.01	148.4°	4.45
10	44.2°	4.52	151.1°	5.25
12	43.2°	4.83	154.1°	6.01
14	42.3°	5.01	163.7°	6.67
16	41.4°	5.12	177.2°	7.23
20	40.8°	5.18	179°	7.92

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°	5.20	6.17	6.90	7.22	7.37	7.44	7.50
60°	5.57	6.56	7.18	7.46	7.59	7.66	7.73
75°	5.89	6.86	7.37	7.64	7.83	7.96	8.11
90°	5.86	6.95	7.51	7.82	8.06	8.26	8.52
110°	5.66	6.79	7.44	7.80	8.12	8.45	9.04
120°	5.35	6.49	7.31	7.74	8.08	8.43	9.16
135°	4.81	5.93	6.87	7.46	7.81	8.15	8.91
150°	4.06	5.14	6.06	6.90	7.44	7.78	8.43