MENTAQUILIBRIUM — ORC Rating

GPH

675.7

OSN

654.7

LOA

8.032 m

Displacement

1729 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6157

Medium

0.8164

High

0.926

Triple Offshore

Low

0.7846

Medium

0.9968

High

1.1216

Boat Specifications

Dimensions

Length overall: 8.032 m
Beam: 2.49 m
Draft: 1.53 m
Displacement: 1729 kg
Crew weight: 419 kg
Wetted surface: 14.35 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.

6,42.8,4.320391,52,4.8,60,5.04,75,5.18,90,5.28,110,5.36,120,5.23,135,4.77,145,4.321542,150,4.08
8,40.7,5.078256,52,5.66,60,5.86,75,5.97,90,6.17,110,6.27,120,6.17,135,5.82,148.5,5.219083,150,5.14
10,38.7,5.573847,52,6.14,60,6.28,75,6.39,90,6.6,110,6.78,120,6.72,135,6.45,149.8,5.947183,150,5.93
12,36.9,5.814792,52,6.4,60,6.54,75,6.69,90,6.85,110,7.21,120,7.22,135,6.93,150,6.4,150.2,6.384214
14,36.3,5.918641,52,6.54,60,6.71,75,6.93,90,7.03,110,7.6,120,7.7,135,7.44,150,6.73,173.4,5.969562
16,36,5.982569,52,6.62,60,6.82,75,7.13,90,7.29,110,7.91,120,8.26,135,8,150,7.08,176.2,6.363991
20,36.1,6.052056,52,6.72,60,6.95,75,7.36,90,7.76,110,8.53,120,9.49,135,10.09,137.2,9.785618,150,8.29
24,37.1,6.080865,52,6.74,60,7,75,7.5,90,8.12,110,9.26,120,10.82,135,13.29,141.9,13.025218,150,11.84

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.8	5.04	5.18	5.28	5.36	5.23	4.77	4.08
8	5.66	5.86	5.97	6.17	6.27	6.17	5.82	5.14
10	6.14	6.28	6.39	6.6	6.78	6.72	6.45	5.93
12	6.4	6.54	6.69	6.85	7.21	7.22	6.93	6.4
14	6.54	6.71	6.93	7.03	7.6	7.7	7.44	6.73
16	6.62	6.82	7.13	7.29	7.91	8.26	8	7.08
20	6.72	6.95	7.36	7.76	8.53	9.49	10.09	8.29
24	6.74	7	7.5	8.12	9.26	10.82	13.29	11.84

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.17	145°	3.54
8	40.7°	3.85	148.5°	4.45
10	38.7°	4.35	149.8°	5.14
12	36.9°	4.65	150.2°	5.54
14	36.3°	4.77	173.4°	5.93
16	36°	4.84	176.2°	6.35
20	36.1°	4.89	137.2°	7.18
24	37.1°	4.85	141.9°	10.25

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