INEVITABLE — ORC Rating

GPH

610.8

OSN

594.3

LOA

10.57 m

Displacement

3514 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6747

Medium

0.8943

High

1.0029

Triple Offshore

Low

0.8697

Medium

1.1045

High

1.2281

Boat Specifications

Dimensions

Length overall: 10.57 m
Beam: 3.34 m
Draft: 1.98 m
Displacement: 3514 kg
Crew weight: 340 kg
Wetted surface: 23.08 m²

Sails

Mainsail: 34.79 m²
Genoa: 25.58 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 88.3 m²

Design

Type: J 105
Builder: TILLOTSON-PEARSON
Designer: JOHNSTONE
Year built: 1991
Stability index: 109.1

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.

6,43,4.840339,52,5.38,60,5.66,75,5.86,90,6.07,110,6,120,5.76,135,5.15,143.3,4.689591,150,4.35
8,40.6,5.702836,52,6.39,60,6.62,75,6.78,90,7.02,110,7.04,120,6.91,135,6.42,146.9,5.71791,150,5.53
10,39,6.163578,52,6.88,60,7.08,75,7.25,90,7.42,110,7.61,120,7.55,135,7.24,149.2,6.577723,150,6.53
12,38.2,6.337032,52,7.07,60,7.28,75,7.54,90,7.64,110,8.07,120,8.09,135,7.83,150,7.2,150.3,7.172201
14,38.1,6.442717,52,7.17,60,7.39,75,7.73,90,7.94,110,8.45,120,8.59,135,8.43,148.8,7.751084,150,7.65
16,37.8,6.479741,52,7.23,60,7.47,75,7.86,90,8.19,110,8.77,120,9.14,135,9.1,150,8.09,173.9,7.090145
20,38.8,6.569679,52,7.28,60,7.54,75,8.01,90,8.52,110,9.38,120,10.22,135,10.92,143,10.267512,150,9.47

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.38	5.66	5.86	6.07	6	5.76	5.15	4.35
8	6.39	6.62	6.78	7.02	7.04	6.91	6.42	5.53
10	6.88	7.08	7.25	7.42	7.61	7.55	7.24	6.53
12	7.07	7.28	7.54	7.64	8.07	8.09	7.83	7.2
14	7.17	7.39	7.73	7.94	8.45	8.59	8.43	7.65
16	7.23	7.47	7.86	8.19	8.77	9.14	9.1	8.09
20	7.28	7.54	8.01	8.52	9.38	10.22	10.92	9.47

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.54	143.3°	3.76
8	40.6°	4.33	146.9°	4.79
10	39°	4.79	149.2°	5.65
12	38.2°	4.98	150.3°	6.23
14	38.1°	5.07	148.8°	6.63
16	37.8°	5.12	173.9°	7.05
20	38.8°	5.12	143°	8.2

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