JOSHUA II — ORC Rating

GPH

677.4

OSN

658.2

LOA

9.96 m

Displacement

4089 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6214

Medium

0.8203

High

0.9188

Triple Offshore

Low

0.7906

Medium

0.9939

High

1.085

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: 20.24 m²

Sails

Mainsail: 25.29 m²
Genoa: 30.6 m²
Spinnaker: 72.61 m²
Asymmetric spinnaker: 0 m²

Design

Type: Ziggurat 995
Builder: C.P.R.
Designer: A.Vallicelli & C.
Year built: 1981
Stability index: 125.2

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.

6,42.3,4.529285,52,5.02,60,5.24,75,5.37,90,5.25,110,5.25,120,5.1,135,4.62,146,4.113203,150,3.94
8,40.2,5.237,52,5.83,60,6.02,75,6.14,90,6.1,110,6.23,120,6.12,135,5.69,150,5,150.5,4.974977
10,39,5.636007,52,6.24,60,6.39,75,6.52,90,6.53,110,6.7,120,6.67,135,6.4,150,5.88,153.8,5.695127
12,38.7,5.830116,52,6.43,60,6.58,75,6.74,90,6.8,110,7,120,7.01,135,6.83,150,6.47,161.3,6.081015
14,38.2,5.866208,52,6.51,60,6.68,75,6.89,90,7,110,7.23,120,7.3,135,7.17,150,6.85,175.4,6.330391
16,38.5,5.928893,52,6.55,60,6.73,75,7,90,7.16,110,7.4,120,7.57,135,7.5,150,7.17,179,6.711022
20,39.4,5.978775,52,6.58,60,6.78,75,7.11,90,7.4,110,7.66,120,7.99,135,8.2,150,7.83,179,7.321115

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.02	5.24	5.37	5.25	5.25	5.1	4.62	3.94
8	5.83	6.02	6.14	6.1	6.23	6.12	5.69	5
10	6.24	6.39	6.52	6.53	6.7	6.67	6.4	5.88
12	6.43	6.58	6.74	6.8	7	7.01	6.83	6.47
14	6.51	6.68	6.89	7	7.23	7.3	7.17	6.85
16	6.55	6.73	7	7.16	7.4	7.57	7.5	7.17
20	6.58	6.78	7.11	7.4	7.66	7.99	8.2	7.83

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.3°	3.35	146°	3.41
8	40.2°	4	150.5°	4.33
10	39°	4.38	153.8°	5.11
12	38.7°	4.55	161.3°	5.76
14	38.2°	4.61	175.4°	6.31
16	38.5°	4.64	179°	6.71
20	39.4°	4.62	179°	7.32

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