GRASSI BATEAUX — ORC Rating

GPH

628.8

OSN

609.2

LOA

9.95 m

Displacement

3940 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6358

Medium

0.8785

High

1.0138

Triple Offshore

Low

0.8266

Medium

1.0803

High

1.2203

Boat Specifications

Dimensions

Length overall: 9.95 m
Beam: 3.41 m
Draft: 1.99 m
Displacement: 3940 kg
Crew weight: 561 kg
Wetted surface: 22.79 m²

Sails

Mainsail: 32.49 m²
Genoa: 26.52 m²
Spinnaker: 89.36 m²
Asymmetric spinnaker: 70.34 m²

Design

Type: J 99
Builder: J COMPOSITES
Designer: JOHNSTONE
Year built: 2019
Stability index: 114.8

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.

6,43.2,4.444636,52,5,60,5.3,75,5.67,90,5.94,110,5.76,120,5.54,135,5,144.2,4.512592,150,4.23
8,42,5.342162,52,5.99,60,6.29,75,6.7,90,6.91,110,6.82,120,6.7,135,6.2,148.4,5.447755,150,5.36
10,41.1,6.051249,52,6.67,60,6.87,75,7.14,90,7.37,110,7.37,120,7.3,135,6.99,150,6.35,151.1,6.282379
12,39.1,6.378485,52,7.01,60,7.18,75,7.33,90,7.7,110,7.81,120,7.78,135,7.47,150,7.03,158.3,6.683653
14,38.4,6.507647,52,7.16,60,7.36,75,7.61,90,7.93,110,8.27,120,8.3,135,7.97,150,7.46,171.2,6.870881
16,38.2,6.566081,52,7.23,60,7.46,75,7.84,90,8.11,110,8.71,120,8.79,135,8.51,150,7.93,177.2,7.258666
20,38.2,6.616981,52,7.26,60,7.53,75,8.07,90,8.57,110,9.41,120,9.86,135,9.9,150,8.97,176.3,8.106898

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5	5.3	5.67	5.94	5.76	5.54	5	4.23
8	5.99	6.29	6.7	6.91	6.82	6.7	6.2	5.36
10	6.67	6.87	7.14	7.37	7.37	7.3	6.99	6.35
12	7.01	7.18	7.33	7.7	7.81	7.78	7.47	7.03
14	7.16	7.36	7.61	7.93	8.27	8.3	7.97	7.46
16	7.23	7.46	7.84	8.11	8.71	8.79	8.51	7.93
20	7.26	7.53	8.07	8.57	9.41	9.86	9.9	8.97

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.24	144.2°	3.66
8	42°	3.97	148.4°	4.64
10	41.1°	4.56	151.1°	5.5
12	39.1°	4.95	158.3°	6.21
14	38.4°	5.1	171.2°	6.79
16	38.2°	5.16	177.2°	7.25
20	38.2°	5.2	176.3°	8.09

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