SLAPSHOT II — ORC Rating

GPH

612.2

OSN

597.5

LOA

10.757 m

Displacement

4941 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6591

Medium

0.8902

High

1.0108

Triple Offshore

Low

0.8623

Medium

1.1032

High

1.2292

Boat Specifications

Dimensions

Length overall: 10.757 m
Beam: 3.52 m
Draft: 2.12 m
Displacement: 4941 kg
Crew weight: 768 kg
Wetted surface: 26.05 m²

Sails

Mainsail: 38.12 m²
Genoa: 29.08 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 120.31 m²

Design

Type: J109 (DK)
Builder: Pearson Composites
Designer: R. Alan Johnsone
Year built: 2001

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.

6,42.8,4.6066,52,5.19,60,5.54,75,6.1,90,6.36,110,6.17,120,5.86,135,5.2,144,4.709419,150,4.4
8,41.2,5.449121,52,6.17,60,6.57,75,7,90,7.19,110,7.11,120,6.97,135,6.46,148,5.624681,150,5.51
10,40.7,6.173048,52,6.82,60,7.02,75,7.34,90,7.59,110,7.57,120,7.51,135,7.22,148.2,6.624366,150,6.51
12,38.6,6.474558,52,7.14,60,7.31,75,7.51,90,7.88,110,8.03,120,7.99,135,7.67,150,7.15,150.5,7.112035
14,38.2,6.604256,52,7.28,60,7.48,75,7.72,90,8.1,110,8.47,120,8.48,135,8.17,150,7.48,174,6.555914
16,38.2,6.680606,52,7.34,60,7.56,75,7.92,90,8.27,110,8.86,120,8.91,135,8.7,150,7.8,177,7.069689
20,37.9,6.741994,52,7.4,60,7.6,75,8.11,90,8.6,110,9.42,120,9.78,135,10.04,150,8.69,177.5,7.767393

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.19	5.54	6.1	6.36	6.17	5.86	5.2	4.4
8	6.17	6.57	7	7.19	7.11	6.97	6.46	5.51
10	6.82	7.02	7.34	7.59	7.57	7.51	7.22	6.51
12	7.14	7.31	7.51	7.88	8.03	7.99	7.67	7.15
14	7.28	7.48	7.72	8.1	8.47	8.48	8.17	7.48
16	7.34	7.56	7.92	8.27	8.86	8.91	8.7	7.8
20	7.4	7.6	8.11	8.6	9.42	9.78	10.04	8.69

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.38	144°	3.81
8	41.2°	4.1	148°	4.77
10	40.7°	4.68	148.2°	5.63
12	38.6°	5.06	150.5°	6.19
14	38.2°	5.19	174°	6.52
16	38.2°	5.25	177°	7.06
20	37.9°	5.32	177.5°	7.76

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