JOSHUA II — ORC Rating

GPH

675.8

OSN

658

LOA

9.96 m

Displacement

4089 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6157

Medium

0.8185

High

0.921

Triple Offshore

Low

0.7873

Medium

0.9979

High

1.0959

Boat Specifications

Dimensions

Length overall: 9.96 m
Beam: 3.24 m
Draft: 1.94 m
Displacement: 4089 kg
Crew weight: 420 kg
Wetted surface: 20.43 m²

Sails

Mainsail: 25.36 m²
Genoa: 31.25 m²
Spinnaker: 72.61 m²
Asymmetric spinnaker: 0 m²

Design

Type: Ziggurat 995
Builder: C.P.R.
Designer: A. Vallicelli & C.
Year built: 1981

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.

6,41.6,4.372838,52,4.92,60,5.17,75,5.37,90,5.3,110,5.26,120,5.11,135,4.66,147,4.125577,150,4
8,40.5,5.115688,52,5.78,60,6.02,75,6.2,90,6.19,110,6.29,120,6.18,135,5.73,150,5,151,4.950723
10,40.5,5.694327,52,6.28,60,6.44,75,6.58,90,6.62,110,6.76,120,6.72,135,6.47,150,5.89,152,5.798759
12,39.8,5.922293,52,6.49,60,6.64,75,6.8,90,6.86,110,7.09,120,7.07,135,6.86,150,6.51,160.5,6.131705
14,39.4,5.978775,52,6.56,60,6.75,75,6.97,90,7.08,110,7.36,120,7.42,135,7.21,150,6.87,180,6.37
16,39.8,6.039437,52,6.6,60,6.8,75,7.1,90,7.29,110,7.53,120,7.75,135,7.58,150,7.19,180,6.76
20,40.1,6.026763,52,6.58,60,6.81,75,7.22,90,7.6,110,7.8,120,8.12,135,8.3,150,7.89,180,7.39

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.92	5.17	5.37	5.3	5.26	5.11	4.66	4
8	5.78	6.02	6.2	6.19	6.29	6.18	5.73	5
10	6.28	6.44	6.58	6.62	6.76	6.72	6.47	5.89
12	6.49	6.64	6.8	6.86	7.09	7.07	6.86	6.51
14	6.56	6.75	6.97	7.08	7.36	7.42	7.21	6.87
16	6.6	6.8	7.1	7.29	7.53	7.75	7.58	7.19
20	6.58	6.81	7.22	7.6	7.8	8.12	8.3	7.89

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.6°	3.27	147°	3.46
8	40.5°	3.89	151°	4.33
10	40.5°	4.33	152°	5.12
12	39.8°	4.55	160.5°	5.78
14	39.4°	4.62	180°	6.37
16	39.8°	4.64	180°	6.76
20	40.1°	4.61	180°	7.39

Loading polar chart…