PARTY TIME — ORC Rating

GPH

577.3

OSN

562

LOA

10.4 m

Displacement

2895 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8079

Medium

1.0708

High

1.2316

Triple Offshore

Low

1.0356

Medium

1.3086

High

1.4851

Boat Specifications

Dimensions

Length overall: 10.4 m
Beam: 3.82 m
Draft: 2.43 m
Displacement: 2895 kg
Crew weight: 750 kg
Wetted surface: 20.95 m²

Sails

Mainsail: 41.16 m²
Genoa: 23.21 m²
Spinnaker: 0 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.

6,41.5,4.99362,52,5.64,60,5.94,75,6.16,90,6.31,110,6.42,120,6.28,135,5.61,143.9,5.086697,150,4.75
8,40.8,5.984187,52,6.65,60,6.85,75,6.98,90,7.16,110,7.36,120,7.27,135,6.86,146.4,6.08701,150,5.85
10,38,6.484683,52,7.13,60,7.31,75,7.45,90,7.48,110,7.97,120,7.99,135,7.56,150,6.84,151.3,6.760561
12,36.5,6.618094,52,7.35,60,7.6,75,7.9,90,7.92,110,8.35,120,8.61,135,8.25,150,7.55,158.2,7.140658
14,35.9,6.666324,52,7.46,60,7.75,75,8.19,90,8.4,110,8.65,120,9.11,135,9.03,150,8.17,180,7.2
16,35.7,6.723446,52,7.53,60,7.85,75,8.36,90,8.8,110,9.01,120,9.5,135,10,150,8.85,180,7.76
20,35.8,6.818206,52,7.7,60,8.03,75,8.53,90,9.28,110,9.79,120,10.47,135,12.16,142.4,12.242997,150,11.19

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.64	5.94	6.16	6.31	6.42	6.28	5.61	4.75
8	6.65	6.85	6.98	7.16	7.36	7.27	6.86	5.85
10	7.13	7.31	7.45	7.48	7.97	7.99	7.56	6.84
12	7.35	7.6	7.9	7.92	8.35	8.61	8.25	7.55
14	7.46	7.75	8.19	8.4	8.65	9.11	9.03	8.17
16	7.53	7.85	8.36	8.8	9.01	9.5	10	8.85
20	7.7	8.03	8.53	9.28	9.79	10.47	12.16	11.19

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.5°	3.74	143.9°	4.11
8	40.8°	4.53	146.4°	5.07
10	38°	5.11	151.3°	5.93
12	36.5°	5.32	158.2°	6.63
14	35.9°	5.4	180°	7.2
16	35.7°	5.46	180°	7.76
20	35.8°	5.53	142.4°	9.7

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