CHINESE WHISPER: ORC Rating

GPH

408.7

OSN

400.1

LOA

18.9 m

Displacement

11267 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

1.107

Medium

1.4625

High

1.7445

Triple Offshore

Low

1.4472

Medium

1.8491

High

2.1647

Boat Specifications

Dimensions

Length overall: 18.9 m
Beam: 4.89 m
Draft: 4.16 m
Displacement: 11267 kg
Crew weight: 1400 kg
Wetted surface: 61.04 m²

Sails

Mainsail: 144.15 m²
Genoa: 92.17 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 365.23 m²

Design

Type: Judel/Vrolijk 60
Builder: GREEN MARINE
Designer: Judel/Vrolijk
Year built: 2009

Performance data

Polar CSV

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

6,44.3,7.545137,52,8.38,60,9.01,75,9.53,90,9.45,110,8.5,120,8.2,135,7.3,140.7,6.797269,150,6.08
8,41.7,8.611936,52,9.64,60,10.09,75,10.58,90,10.62,110,10.18,120,10.05,135,9.36,140.9,8.788134,150,7.87
10,39.7,9.020021,52,10.1,60,10.53,75,11.27,90,11.75,110,11.09,120,11.19,135,10.6,146.3,9.676014,150,9.3
12,38.9,9.303005,52,10.37,60,10.86,75,11.77,90,12.49,110,12.12,120,12,135,11.97,150,10.47,151.1,10.200299
14,37.7,9.516906,52,10.62,60,11.13,75,12.13,90,13.02,110,13.45,120,13.18,135,13.38,144.2,12.23085,150,11.46
16,37,9.653966,52,10.95,60,11.53,75,12.4,90,13.45,110,14.63,120,14.23,135,14.47,142.6,14.136195,150,12.96
20,37,9.779179,52,11.21,60,11.94,75,13.23,90,14.14,110,16.11,120,16.62,135,16.69,145.5,17.169701,150,16.34

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	8.38	9.01	9.53	9.45	8.5	8.2	7.3	6.08
8	9.64	10.09	10.58	10.62	10.18	10.05	9.36	7.87
10	10.1	10.53	11.27	11.75	11.09	11.19	10.6	9.3
12	10.37	10.86	11.77	12.49	12.12	12	11.97	10.47
14	10.62	11.13	12.13	13.02	13.45	13.18	13.38	11.46
16	10.95	11.53	12.4	13.45	14.63	14.23	14.47	12.96
20	11.21	11.94	13.23	14.14	16.11	16.62	16.69	16.34

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.3°	5.4	140.7°	5.26
8	41.7°	6.43	140.9°	6.82
10	39.7°	6.94	146.3°	8.05
12	38.9°	7.24	151.1°	8.93
14	37.7°	7.53	144.2°	9.92
16	37°	7.71	142.6°	11.23
20	37°	7.81	145.5°	14.15

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°	8.38	9.64	10.10	10.37	10.62	10.95	11.21
60°	9.01	10.09	10.53	10.86	11.13	11.53	11.94
75°	9.53	10.58	11.27	11.77	12.13	12.40	13.23
90°	9.45	10.62	11.75	12.49	13.02	13.45	14.14
110°	8.50	10.18	11.09	12.12	13.45	14.63	16.11
120°	8.20	10.05	11.19	12.00	13.18	14.23	16.62
135°	7.30	9.36	10.60	11.97	13.38	14.47	16.69
150°	6.08	7.87	9.30	10.47	11.46	12.96	16.34