Rocky — ORC Rating | RegattaPages

GPH

614.4

OSN

599

LOA

9.96 m

Displacement

2967 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.672

Medium

0.8942

High

1.0138

Triple Offshore

Low

0.8683

Medium

1.0939

High

1.2237

Boat Specifications

Dimensions

Length overall: 9.96 m
Beam: 2.99 m
Draft: 1.79 m
Displacement: 2967 kg
Crew weight: 538 kg
Wetted surface: 19.57 m²

Sails

Mainsail: 32.09 m²
Genoa: 30.25 m²
Spinnaker: 74.57 m²
Asymmetric spinnaker: 0 m²

Design

Type: X-99
Builder: X-YACHTS
Designer: Niels Jeppesen
Year built: 1984

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.

6,42,4.992297,52,5.62,60,5.93,75,6.16,90,6.1,110,5.81,120,5.63,135,5.02,144.5,4.421977,150,4.15
8,40.9,5.913845,52,6.53,60,6.71,75,6.84,90,6.83,110,6.83,120,6.72,135,6.21,149,5.284849,150,5.23
10,38.8,6.261725,52,6.88,60,7.05,75,7.2,90,7.22,110,7.35,120,7.26,135,6.95,149.5,6.290409,150,6.25
12,37.7,6.38252,52,7.02,60,7.23,75,7.51,90,7.6,110,7.87,120,7.81,135,7.43,150,6.95,158,6.643774
14,37.1,6.431925,52,7.1,60,7.34,75,7.74,90,7.97,110,8.27,120,8.38,135,7.97,150,7.4,180,6.76
16,37.1,6.469539,52,7.15,60,7.4,75,7.87,90,8.28,110,8.58,120,8.96,135,8.55,150,7.89,180,7.2
20,37.3,6.536987,52,7.23,60,7.48,75,8,90,8.62,110,9.16,120,9.8,135,10.24,150,9.05,180,8.12

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.62	5.93	6.16	6.1	5.81	5.63	5.02	4.15
8	6.53	6.71	6.84	6.83	6.83	6.72	6.21	5.23
10	6.88	7.05	7.2	7.22	7.35	7.26	6.95	6.25
12	7.02	7.23	7.51	7.6	7.87	7.81	7.43	6.95
14	7.1	7.34	7.74	7.97	8.27	8.38	7.97	7.4
16	7.15	7.4	7.87	8.28	8.58	8.96	8.55	7.89
20	7.23	7.48	8	8.62	9.16	9.8	10.24	9.05

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	3.71	144.5°	3.6
8	40.9°	4.47	149°	4.53
10	38.8°	4.88	149.5°	5.42
12	37.7°	5.05	158°	6.16
14	37.1°	5.13	180°	6.76
16	37.1°	5.16	180°	7.2
20	37.3°	5.2	180°	8.12

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