PARTY TIME — ORC Rating

GPH

582.9

OSN

568.3

LOA

10.4 m

Displacement

2895 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8055

Medium

1.057

High

1.2049

Triple Offshore

Low

1.0316

Medium

1.2944

High

1.4563

Boat Specifications

Dimensions

Length overall: 10.4 m
Beam: 3.82 m
Draft: 2.43 m
Displacement: 2895 kg
Crew weight: 600 kg
Wetted surface: 20.95 m²

Sails

Mainsail: 41.16 m²
Genoa: 23.21 m²
Spinnaker: 98.42 m²
Asymmetric spinnaker: 122.89 m²

Design

Type: YOUNG ROCKET 31
Builder: CANTERBURY MARINE
Designer: YOUNG Jim
Year built: 1988

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.

6,41.5,4.966916,52,5.59,60,5.87,75,6.09,90,6.3,110,6.4,120,6.26,135,5.6,143.9,5.086697,150,4.74
8,40.8,5.957767,52,6.63,60,6.83,75,6.96,90,7.08,110,7.33,120,7.27,135,6.86,146.4,6.08701,150,5.85
10,38.5,6.414449,52,7.07,60,7.26,75,7.43,90,7.42,110,7.87,120,7.94,135,7.56,150,6.84,151.3,6.760561
12,37.6,6.525391,52,7.24,60,7.48,75,7.82,90,7.9,110,8.23,120,8.5,135,8.24,150,7.54,157.6,7.160271
14,37.3,6.587272,52,7.32,60,7.61,75,8.07,90,8.34,110,8.56,120,8.93,135,9.02,150,8.16,180,7.19
16,37.1,6.632531,52,7.37,60,7.69,75,8.21,90,8.67,110,8.91,120,9.36,135,9.9,150,8.83,180,7.74
20,37.3,6.712983,52,7.51,60,7.86,75,8.34,90,9.06,110,9.58,120,10.24,135,11.73,143.5,11.905105,150,11.06

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.59	5.87	6.09	6.3	6.4	6.26	5.6	4.74
8	6.63	6.83	6.96	7.08	7.33	7.27	6.86	5.85
10	7.07	7.26	7.43	7.42	7.87	7.94	7.56	6.84
12	7.24	7.48	7.82	7.9	8.23	8.5	8.24	7.54
14	7.32	7.61	8.07	8.34	8.56	8.93	9.02	8.16
16	7.37	7.69	8.21	8.67	8.91	9.36	9.9	8.83
20	7.51	7.86	8.34	9.06	9.58	10.24	11.73	11.06

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.5°	3.72	143.9°	4.11
8	40.8°	4.51	146.4°	5.07
10	38.5°	5.02	151.3°	5.93
12	37.6°	5.17	157.6°	6.62
14	37.3°	5.24	180°	7.19
16	37.1°	5.29	180°	7.74
20	37.3°	5.34	143.5°	9.57

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