MAJOR DETAIL: ORC Rating

GPH

611.4

OSN

595.6

LOA

10.79 m

Displacement

4544 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6804

Medium

0.9037

High

1.0282

Triple Offshore

Low

0.8737

Medium

1.0997

High

1.2206

Boat Specifications

Dimensions

Length overall: 10.79 m
Beam: 3.65 m
Draft: 2.12 m
Displacement: 4544 kg
Crew weight: 601 kg
Wetted surface: 24.86 m²

Sails

Mainsail: 32.49 m²
Genoa: 52.87 m²
Spinnaker: 96.88 m²
Asymmetric spinnaker: 0 m²

Design

Type: J-35
Builder: JOHNSTONE
Designer: JOHNSTONE
Year built: 1983

Performance data

Polar CSV

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

6,42,5.01921,52,5.65,60,5.96,75,6.2,90,6.13,110,5.66,120,5.52,135,5.01,145,4.49245,150,4.25
8,41.2,5.954162,52,6.6,60,6.79,75,6.93,90,6.91,110,6.77,120,6.66,135,6.18,149,5.37818,150,5.33
10,39,6.356592,52,6.99,60,7.14,75,7.27,90,7.28,110,7.3,120,7.24,135,6.96,150,6.29,151,6.242713
12,37.9,6.513881,52,7.14,60,7.31,75,7.53,90,7.58,110,7.7,120,7.68,135,7.4,150,6.98,158,6.643774
14,37.1,6.582379,52,7.22,60,7.41,75,7.72,90,7.87,110,8.08,120,8.14,135,7.84,150,7.38,180,6.75
16,36.8,6.631437,52,7.27,60,7.47,75,7.84,90,8.12,110,8.31,120,8.56,135,8.31,150,7.78,180,7.2
20,36.4,6.671688,52,7.32,60,7.53,75,7.96,90,8.42,110,8.72,120,9.16,135,9.38,150,8.67,180,7.97

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.65	5.96	6.2	6.13	5.66	5.52	5.01	4.25
8	6.6	6.79	6.93	6.91	6.77	6.66	6.18	5.33
10	6.99	7.14	7.27	7.28	7.3	7.24	6.96	6.29
12	7.14	7.31	7.53	7.58	7.7	7.68	7.4	6.98
14	7.22	7.41	7.72	7.87	8.08	8.14	7.84	7.38
16	7.27	7.47	7.84	8.12	8.31	8.56	8.31	7.78
20	7.32	7.53	7.96	8.42	8.72	9.16	9.38	8.67

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	3.73	145°	3.68
8	41.2°	4.48	149°	4.61
10	39°	4.94	151°	5.46
12	37.9°	5.14	158°	6.16
14	37.1°	5.25	180°	6.75
16	36.8°	5.31	180°	7.2
20	36.4°	5.37	180°	7.97

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°	5.65	6.60	6.99	7.14	7.22	7.27	7.32
60°	5.96	6.79	7.14	7.31	7.41	7.47	7.53
75°	6.20	6.93	7.27	7.53	7.72	7.84	7.96
90°	6.13	6.91	7.28	7.58	7.87	8.12	8.42
110°	5.66	6.77	7.30	7.70	8.08	8.31	8.72
120°	5.52	6.66	7.24	7.68	8.14	8.56	9.16
135°	5.01	6.18	6.96	7.40	7.84	8.31	9.38
150°	4.25	5.33	6.29	6.98	7.38	7.78	8.67