SOUTHBOUND — ORC Rating

GPH

618.8

OSN

597.5

LOA

10.57 m

Displacement

3893 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6518

Medium

0.8914

High

1.0216

Triple Offshore

Low

0.839

Medium

1.0983

High

1.2427

Boat Specifications

Dimensions

Length overall: 10.57 m
Beam: 3.35 m
Draft: 2 m
Displacement: 3893 kg
Crew weight: 689 kg
Wetted surface: 24.8 m²

Sails

Mainsail: 34.42 m²
Genoa: 24.96 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 89.44 m²

Design

Type: J 105
Builder: TILLOTSON-PEARSON
Designer: JOHNSTONE
Year built: 1991
Stability index: 111

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.

6,43,4.621567,52,5.16,60,5.43,75,5.59,90,5.69,110,5.74,120,5.57,135,5,143.4,4.558944,150,4.23
8,41.4,5.559177,52,6.19,60,6.43,75,6.58,90,6.79,110,6.89,120,6.75,135,6.23,147.5,5.525311,150,5.38
10,39.4,6.15995,52,6.82,60,7,75,7.13,90,7.35,110,7.52,120,7.43,135,7.07,148.7,6.436823,150,6.35
12,37.2,6.452991,52,7.16,60,7.32,75,7.48,90,7.67,110,8.02,120,7.98,135,7.63,149.6,7.049164,150,7.02
14,36.4,6.609568,52,7.35,60,7.54,75,7.77,90,7.88,110,8.45,120,8.52,135,8.18,149.8,7.451334,150,7.44
16,36.3,6.712756,52,7.45,60,7.67,75,8.01,90,8.16,110,8.81,120,9.07,135,8.77,150,7.82,173.9,6.939291
20,36.3,6.812021,52,7.56,60,7.83,75,8.29,90,8.7,110,9.41,120,10.15,135,10.28,150,8.65,174.8,7.741862

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.16	5.43	5.59	5.69	5.74	5.57	5	4.23
8	6.19	6.43	6.58	6.79	6.89	6.75	6.23	5.38
10	6.82	7	7.13	7.35	7.52	7.43	7.07	6.35
12	7.16	7.32	7.48	7.67	8.02	7.98	7.63	7.02
14	7.35	7.54	7.77	7.88	8.45	8.52	8.18	7.44
16	7.45	7.67	8.01	8.16	8.81	9.07	8.77	7.82
20	7.56	7.83	8.29	8.7	9.41	10.15	10.28	8.65

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.38	143.4°	3.66
8	41.4°	4.17	147.5°	4.66
10	39.4°	4.76	148.7°	5.5
12	37.2°	5.14	149.6°	6.08
14	36.4°	5.32	149.8°	6.44
16	36.3°	5.41	173.9°	6.9
20	36.3°	5.49	174.8°	7.71

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