MENTAQUILIBRIUM — ORC Rating

GPH

668.1

OSN

650.8

LOA

7.997 m

Displacement

1555 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7002

Medium

0.9224

High

1.0411

Triple Offshore

Low

0.8981

Medium

1.1313

High

1.2694

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.

6,42.5,4.313167,52,4.87,60,5.15,75,5.37,90,5.47,110,5.54,120,5.4,135,4.9,145,4.406996,150,4.17
8,41,5.11455,52,5.76,60,5.98,75,6.13,90,6.29,110,6.39,120,6.3,135,5.97,148.2,5.318318,150,5.22
10,39,5.636007,52,6.2,60,6.34,75,6.48,90,6.66,110,6.9,120,6.82,135,6.52,150,6.04,150.3,6.020965
12,37.6,5.805958,52,6.39,60,6.57,75,6.78,90,6.88,110,7.42,120,7.42,135,7.04,150,6.44,151.5,6.372202
14,37.2,5.862931,52,6.47,60,6.69,75,7.06,90,7.21,110,7.79,120,8.06,135,7.64,150,6.8,176.3,6.082679
16,37.2,5.900594,52,6.51,60,6.75,75,7.22,90,7.57,110,8.08,120,8.62,135,8.37,150,7.24,177.7,6.465208
20,37.2,5.988476,52,6.63,60,6.89,75,7.35,90,8.02,110,8.66,120,9.39,135,10.37,139,10.096599,150,8.8

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.87	5.15	5.37	5.47	5.54	5.4	4.9	4.17
8	5.76	5.98	6.13	6.29	6.39	6.3	5.97	5.22
10	6.2	6.34	6.48	6.66	6.9	6.82	6.52	6.04
12	6.39	6.57	6.78	6.88	7.42	7.42	7.04	6.44
14	6.47	6.69	7.06	7.21	7.79	8.06	7.64	6.8
16	6.51	6.75	7.22	7.57	8.08	8.62	8.37	7.24
20	6.63	6.89	7.35	8.02	8.66	9.39	10.37	8.8

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.5°	3.18	145°	3.61
8	41°	3.86	148.2°	4.52
10	39°	4.38	150.3°	5.23
12	37.6°	4.6	151.5°	5.6
14	37.2°	4.67	176.3°	6.07
16	37.2°	4.7	177.7°	6.46
20	37.2°	4.77	139°	7.62

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