the Joker — ORC Rating

GPH

589.3

OSN

572.2

LOA

12.244 m

Displacement

6815 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6723

Medium

0.9285

High

1.0641

Triple Offshore

Low

0.8799

Medium

1.1546

High

1.2992

Boat Specifications

Dimensions

Length overall: 12.244 m
Beam: 3.67 m
Draft: 2.16 m
Displacement: 6815 kg
Crew weight: 814 kg
Wetted surface: 32.44 m²

Sails

Mainsail: 44.69 m²
Genoa: 34.7 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 138.29 m²

Design

Type: J/120
Builder: J-Composite
Designer: Johnstone
Year built: 1995
Stability index: 119.1

Velocity Prediction

Polar CSV

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

6,43.9,4.732489,52,5.27,60,5.61,75,6.15,90,6.41,110,6.19,120,5.93,135,5.31,143.8,4.832951,150,4.5
8,42,5.638201,52,6.34,60,6.71,75,7.27,90,7.49,110,7.36,120,7.23,135,6.66,146.9,5.88503,150,5.69
10,41.2,6.40604,52,7.14,60,7.38,75,7.75,90,7.97,110,7.96,120,7.91,135,7.6,147.8,6.93695,150,6.77
12,39.9,6.869447,52,7.54,60,7.73,75,7.96,90,8.3,110,8.38,120,8.4,135,8.11,150,7.56,150.5,7.525659
14,38.8,6.993115,52,7.71,60,7.91,75,8.14,90,8.55,110,8.83,120,8.93,135,8.63,150,7.95,151.2,7.873956
16,38.2,7.062355,52,7.78,60,8.01,75,8.35,90,8.74,110,9.3,120,9.4,135,9.23,150,8.28,171.2,7.376837
20,37.5,7.184693,52,7.88,60,8.07,75,8.59,90,9.09,110,10.04,120,10.27,135,10.71,150,9.08,175.7,8.112837

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.27	5.61	6.15	6.41	6.19	5.93	5.31	4.5
8	6.34	6.71	7.27	7.49	7.36	7.23	6.66	5.69
10	7.14	7.38	7.75	7.97	7.96	7.91	7.6	6.77
12	7.54	7.73	7.96	8.3	8.38	8.4	8.11	7.56
14	7.71	7.91	8.14	8.55	8.83	8.93	8.63	7.95
16	7.78	8.01	8.35	8.74	9.3	9.4	9.23	8.28
20	7.88	8.07	8.59	9.09	10.04	10.27	10.71	9.08

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.9°	3.41	143.8°	3.9
8	42°	4.19	146.9°	4.93
10	41.2°	4.82	147.8°	5.87
12	39.9°	5.27	150.5°	6.55
14	38.8°	5.45	151.2°	6.9
16	38.2°	5.55	171.2°	7.29
20	37.5°	5.7	175.7°	8.09

Loading polar chart…