JSQUARRED — ORC Rating

GPH

615.5

OSN

595.8

LOA

10.57 m

Displacement

3910 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6623

Medium

0.8949

High

1.0153

Triple Offshore

Low

0.851

Medium

1.1011

High

1.2359

Boat Specifications

Dimensions

Length overall: 10.57 m
Beam: 3.34 m
Draft: 2 m
Displacement: 3910 kg
Crew weight: 644 kg
Wetted surface: 24.92 m²

Sails

Mainsail: 34.74 m²
Genoa: 26 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 95.34 m²

Design

Type: J 105
Builder: TILLOTSON-PEARSON
Designer: JOHNSTONE Rodney
Year built: 1991

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.

6,43.4,4.707018,52,5.22,60,5.5,75,5.67,90,5.75,110,5.83,120,5.68,135,5.12,143.7,4.653019,150,4.33
8,41.2,5.582027,52,6.23,60,6.48,75,6.63,90,6.82,110,6.96,120,6.84,135,6.34,147.3,5.656493,150,5.5
10,39.4,6.172891,52,6.84,60,7.02,75,7.16,90,7.31,110,7.55,120,7.49,135,7.16,148.9,6.528337,150,6.46
12,37.8,6.45443,52,7.14,60,7.32,75,7.5,90,7.55,110,8,120,8.03,135,7.71,149.8,7.115792,150,7.11
14,37.1,6.569842,52,7.29,60,7.5,75,7.76,90,7.86,110,8.35,120,8.53,135,8.28,149.1,7.586839,150,7.51
16,36.9,6.652622,52,7.38,60,7.6,75,7.97,90,8.17,110,8.63,120,9,135,8.88,150,7.89,173.9,6.989575
20,37,6.761533,52,7.48,60,7.74,75,8.19,90,8.64,110,9.16,120,9.82,135,10.42,142.4,9.80702,150,8.98
24,38,6.814628,52,7.51,60,7.79,75,8.32,90,8.92,110,9.59,120,10.67,135,13.08,141,12.944801,150,11.61

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.22	5.5	5.67	5.75	5.83	5.68	5.12	4.33
8	6.23	6.48	6.63	6.82	6.96	6.84	6.34	5.5
10	6.84	7.02	7.16	7.31	7.55	7.49	7.16	6.46
12	7.14	7.32	7.5	7.55	8	8.03	7.71	7.11
14	7.29	7.5	7.76	7.86	8.35	8.53	8.28	7.51
16	7.38	7.6	7.97	8.17	8.63	9	8.88	7.89
20	7.48	7.74	8.19	8.64	9.16	9.82	10.42	8.98
24	7.51	7.79	8.32	8.92	9.59	10.67	13.08	11.61

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.4°	3.42	143.7°	3.75
8	41.2°	4.2	147.3°	4.76
10	39.4°	4.77	148.9°	5.59
12	37.8°	5.1	149.8°	6.15
14	37.1°	5.24	149.1°	6.51
16	36.9°	5.32	173.9°	6.95
20	37°	5.4	142.4°	7.77
24	38°	5.37	141°	10.06

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