Jilbo — ORC Rating | RegattaPages

GPH

665

OSN

649.6

LOA

8 m

Displacement

1468 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6282

Medium

0.8168

High

0.9195

Triple Offshore

Low

0.8077

Medium

1.0074

High

1.1276

Boat Specifications

Dimensions

Length overall: 8 m
Beam: 2.49 m
Draft: 1.5 m
Displacement: 1468 kg
Crew weight: 350 kg
Wetted surface: 13.55 m²

Sails

Mainsail: 21.68 m²
Genoa: 13.81 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 63.6 m²

Design

Type: J/80
Builder: J-Boats
Designer: Rod Johnstone
Year built: 1992

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.

6,42.8,4.361278,52,4.92,60,5.22,75,5.45,90,5.57,110,5.7,120,5.56,135,4.99,145,4.480243,150,4.24
8,41.8,5.191314,52,5.79,60,6.01,75,6.18,90,6.32,110,6.48,120,6.43,135,6.09,148,5.424221,150,5.31
10,39.8,5.63594,52,6.21,60,6.37,75,6.53,90,6.58,110,7,120,7,135,6.68,150,6.119913
12,39.2,5.768155,52,6.35,60,6.56,75,6.84,90,6.94,110,7.37,120,7.6,135,7.28,150,6.6,150.8,6.552704
14,39.4,5.836423,52,6.41,60,6.65,75,7.08,90,7.33,110,7.68,120,8.1,135,7.98,150,7.02,176,6.195091
16,39.2,5.84558,52,6.43,60,6.69,75,7.21,90,7.67,110,8.01,120,8.51,135,8.83,144.2,8.137461,150,7.62
20,40.1,5.93525,52,6.52,60,6.83,75,7.31,90,8.04,110,8.65,120,9.34,135,10.85,140.8,10.878199,150,9.74

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.92	5.22	5.45	5.57	5.7	5.56	4.99	4.24
8	5.79	6.01	6.18	6.32	6.48	6.43	6.09	5.31
10	6.21	6.37	6.53	6.58	7	7	6.68	6.12
12	6.35	6.56	6.84	6.94	7.37	7.6	7.28	6.6
14	6.41	6.65	7.08	7.33	7.68	8.1	7.98	7.02
16	6.43	6.69	7.21	7.67	8.01	8.51	8.83	7.62
20	6.52	6.83	7.31	8.04	8.65	9.34	10.85	9.74

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.2	145°	3.67
8	41.8°	3.87	148°	4.6
10	39.8°	4.33	150°	5.3
12	39.2°	4.47	150.8°	5.72
14	39.4°	4.51	176°	6.18
16	39.2°	4.53	144.2°	6.6
20	40.1°	4.54	140.8°	8.43

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