MENTAQUILIBRIUM — ORC Rating

GPH

665.6

OSN

647.8

LOA

7.997 m

Displacement

1555 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6226

Medium

0.822

High

0.9313

Triple Offshore

Low

0.799

Medium

1.0097

High

1.1412

Boat Specifications

Dimensions

Length overall: 7.997 m
Beam: 2.49 m
Draft: 1.5 m
Displacement: 1555 kg
Crew weight: 418 kg
Wetted surface: 13.99 m²

Sails

Mainsail: 21.07 m²
Genoa: 14.68 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 52.97 m²

Design

Type: J-80
Builder: T.P.Y.
Designer: R.Johnstone
Year built: 1993

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.

6,42.8,4.33402,52,4.87,60,5.16,75,5.38,90,5.48,110,5.56,120,5.42,135,4.91,145,4.419204,150,4.19
8,41.2,5.116858,52,5.76,60,5.99,75,6.14,90,6.31,110,6.4,120,6.31,135,5.98,148,5.341678,150,5.24
10,39.4,5.668189,52,6.21,60,6.35,75,6.49,90,6.71,110,6.93,120,6.84,135,6.53,150,6.05,150.5,6.020527
12,37.5,5.823383,52,6.42,60,6.6,75,6.81,90,6.96,110,7.49,120,7.46,135,7.06,150,6.46,151.5,6.383581
14,37.1,5.905335,52,6.52,60,6.76,75,7.12,90,7.26,110,7.93,120,8.15,135,7.68,150,6.82,176,6.094847
16,37.1,5.942948,52,6.57,60,6.84,75,7.34,90,7.65,110,8.28,120,8.82,135,8.42,150,7.26,178,6.48395
20,37.1,6.018175,52,6.68,60,6.95,75,7.51,90,8.22,110,9,120,9.82,135,10.62,138,10.374828,150,8.91

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.87	5.16	5.38	5.48	5.56	5.42	4.91	4.19
8	5.76	5.99	6.14	6.31	6.4	6.31	5.98	5.24
10	6.21	6.35	6.49	6.71	6.93	6.84	6.53	6.05
12	6.42	6.6	6.81	6.96	7.49	7.46	7.06	6.46
14	6.52	6.76	7.12	7.26	7.93	8.15	7.68	6.82
16	6.57	6.84	7.34	7.65	8.28	8.82	8.42	7.26
20	6.68	6.95	7.51	8.22	9	9.82	10.62	8.91

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.18	145°	3.62
8	41.2°	3.85	148°	4.53
10	39.4°	4.38	150.5°	5.24
12	37.5°	4.62	151.5°	5.61
14	37.1°	4.71	176°	6.08
16	37.1°	4.74	178°	6.48
20	37.1°	4.8	138°	7.71

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