Tuulahdus: ORC Rating

GPH

908.2

OSN

883.5

LOA

5.448 m

Displacement

595 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.4373

Medium

0.5993

High

0.7122

Triple Offshore

Low

0.5703

Medium

0.7447

High

0.8685

Boat Specifications

Dimensions

Length overall: 5.448 m
Beam: 2 m
Draft: 0.78 m
Displacement: 595 kg
Crew weight: 260 kg
Wetted surface: 7.79 m²

Sails

Mainsail: 8.99 m²
Genoa: 6.07 m²
Spinnaker: 15.3 m²
Asymmetric spinnaker: 15 m²

Design

Type: Joe 17
Designer: Hans Groop
Year built: 1978
Stability index: 99.5

Performance data

Polar CSV

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

6,46.5,3.152445,52,3.41,60,3.62,75,3.97,90,4.15,110,4.03,120,3.89,135,3.53,145.7,3.195746,150,3.04
8,45.6,3.744658,52,4.07,60,4.28,75,4.67,90,4.83,110,4.76,120,4.65,135,4.33,150,3.79,157.4,3.585316
10,45.4,4.187121,52,4.52,60,4.71,75,5.06,90,5.21,110,5.18,120,5.1,135,4.89,150,4.47,173.6,3.994897
12,45,4.511341,52,4.82,60,5.01,75,5.34,90,5.53,110,5.52,120,5.44,135,5.24,150,4.96,177.2,4.575462
14,43.9,4.704732,52,5.03,60,5.22,75,5.62,90,5.84,110,5.86,120,5.78,135,5.56,150,5.27,179,4.970757
16,43.2,4.869894,52,5.21,60,5.39,75,5.86,90,6.16,110,6.21,120,6.12,135,5.87,150,5.57,179,5.260801
20,42.7,4.980171,52,5.4,60,5.67,75,6.07,90,6.77,110,7.21,120,7.02,135,6.56,150,6.17,179,5.820887

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	3.41	3.62	3.97	4.15	4.03	3.89	3.53	3.04
8	4.07	4.28	4.67	4.83	4.76	4.65	4.33	3.79
10	4.52	4.71	5.06	5.21	5.18	5.1	4.89	4.47
12	4.82	5.01	5.34	5.53	5.52	5.44	5.24	4.96
14	5.03	5.22	5.62	5.84	5.86	5.78	5.56	5.27
16	5.21	5.39	5.86	6.16	6.21	6.12	5.87	5.57
20	5.4	5.67	6.07	6.77	7.21	7.02	6.56	6.17

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	46.5°	2.17	145.7°	2.64
8	45.6°	2.62	157.4°	3.31
10	45.4°	2.94	173.6°	3.97
12	45°	3.19	177.2°	4.57
14	43.9°	3.39	179°	4.97
16	43.2°	3.55	179°	5.26
20	42.7°	3.66	179°	5.82

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°	3.41	4.07	4.52	4.82	5.03	5.21	5.40
60°	3.62	4.28	4.71	5.01	5.22	5.39	5.67
75°	3.97	4.67	5.06	5.34	5.62	5.86	6.07
90°	4.15	4.83	5.21	5.53	5.84	6.16	6.77
110°	4.03	4.76	5.18	5.52	5.86	6.21	7.21
120°	3.89	4.65	5.10	5.44	5.78	6.12	7.02
135°	3.53	4.33	4.89	5.24	5.56	5.87	6.56
150°	3.04	3.79	4.47	4.96	5.27	5.57	6.17