Jasper — ORC Rating | RegattaPages

GPH

746.7

OSN

721.6

LOA

9.33 m

Displacement

4800 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.595

Medium

0.8288

High

0.9827

Triple Offshore

Low

0.7684

Medium

1.0296

High

1.1734

Boat Specifications

Dimensions

Length overall: 9.33 m
Beam: 3.15 m
Draft: 1.78 m
Displacement: 4800 kg
Crew weight: 320 kg
Wetted surface: 22.52 m²

Sails

Mainsail: 18.66 m²
Genoa: 33.21 m²
Spinnaker: 74.76 m²
Asymmetric spinnaker: 63.31 m²

Design

Type: Miura
Builder: Halsted
Designer: Berckmeyer
Year built: 1978

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.

6,44.3,3.786541,52,4.19,60,4.44,75,4.63,90,4.58,110,4.72,120,4.57,135,4.08,147.6,3.600497,150,3.51
8,42.1,4.434107,52,4.96,60,5.22,75,5.45,90,5.53,110,5.75,120,5.63,135,5.13,150,4.46,151.3,4.400635
10,41.6,4.974605,52,5.59,60,5.87,75,6.08,90,6.25,110,6.4,120,6.34,135,6.05,149.3,5.407906,150,5.36
12,42.1,5.498831,52,6.05,60,6.25,75,6.41,90,6.59,110,6.74,120,6.71,135,6.51,150,6.11,156.2,5.847252
14,41.5,5.754679,52,6.29,60,6.46,75,6.62,90,6.74,110,7.03,120,7.02,135,6.82,150,6.52,174.7,5.965504
16,40.8,5.838876,52,6.39,60,6.58,75,6.78,90,6.85,110,7.24,120,7.33,135,7.14,150,6.8,179.9,6.39001
20,40.4,5.856567,52,6.44,60,6.64,75,6.96,90,7.19,110,7.53,120,7.76,135,7.76,150,7.38,180,6.95

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.19	4.44	4.63	4.58	4.72	4.57	4.08	3.51
8	4.96	5.22	5.45	5.53	5.75	5.63	5.13	4.46
10	5.59	5.87	6.08	6.25	6.4	6.34	6.05	5.36
12	6.05	6.25	6.41	6.59	6.74	6.71	6.51	6.11
14	6.29	6.46	6.62	6.74	7.03	7.02	6.82	6.52
16	6.39	6.58	6.78	6.85	7.24	7.33	7.14	6.8
20	6.44	6.64	6.96	7.19	7.53	7.76	7.76	7.38

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.3°	2.71	147.6°	3.04
8	42.1°	3.29	151.3°	3.86
10	41.6°	3.72	149.3°	4.65
12	42.1°	4.08	156.2°	5.35
14	41.5°	4.31	174.7°	5.94
16	40.8°	4.42	179.9°	6.39
20	40.4°	4.46	180°	6.95

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