the Joker — ORC Rating

GPH

590.2

OSN

571.8

LOA

12.244 m

Displacement

7106 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6793

Medium

0.9311

High

1.064

Triple Offshore

Low

0.8815

Medium

1.1522

High

1.2896

Boat Specifications

Dimensions

Length overall: 12.244 m
Beam: 3.67 m
Draft: 2.17 m
Displacement: 7106 kg
Crew weight: 799 kg
Wetted surface: 32.8 m²

Sails

Mainsail: 44.69 m²
Genoa: 34.7 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 123.28 m²

Design

Type: J/120
Builder: J-Composite
Designer: Johnstone
Year built: 1995
Stability index: 120.3

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.

6,43.6,4.846916,52,5.39,60,5.7,75,6.06,90,6.3,110,6.08,120,5.81,135,5.23,143.3,4.776897,150,4.42
8,41.5,5.794735,52,6.46,60,6.73,75,7.13,90,7.35,110,7.22,120,7.07,135,6.52,146.9,5.825344,150,5.63
10,39.9,6.452326,52,7.16,60,7.37,75,7.67,90,7.9,110,7.88,120,7.81,135,7.45,148.7,6.741109,150,6.65
12,38.4,6.813889,52,7.54,60,7.72,75,7.92,90,8.22,110,8.31,120,8.3,135,8.02,149.6,7.431766,150,7.41
14,37.6,6.967149,52,7.73,60,7.92,75,8.13,90,8.45,110,8.68,120,8.74,135,8.5,150,7.85,150.5,7.812898
16,37.2,7.055604,52,7.82,60,8.03,75,8.32,90,8.62,110,9.03,120,9.15,135,8.99,150,8.19,171.8,7.274371
20,37,7.137173,52,7.92,60,8.16,75,8.56,90,8.9,110,9.7,120,9.93,135,10.1,150,8.89,175.4,8.065982

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.39	5.7	6.06	6.3	6.08	5.81	5.23	4.42
8	6.46	6.73	7.13	7.35	7.22	7.07	6.52	5.63
10	7.16	7.37	7.67	7.9	7.88	7.81	7.45	6.65
12	7.54	7.72	7.92	8.22	8.31	8.3	8.02	7.41
14	7.73	7.92	8.13	8.45	8.68	8.74	8.5	7.85
16	7.82	8.03	8.32	8.62	9.03	9.15	8.99	8.19
20	7.92	8.16	8.56	8.9	9.7	9.93	10.1	8.89

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.6°	3.51	143.3°	3.83
8	41.5°	4.34	146.9°	4.88
10	39.9°	4.95	148.7°	5.76
12	38.4°	5.34	149.6°	6.41
14	37.6°	5.52	150.5°	6.8
16	37.2°	5.62	171.8°	7.2
20	37°	5.7	175.4°	8.04

Loading polar chart…