GRASSI BATEAUX — ORC Rating

GPH

625.6

OSN

605.8

LOA

9.95 m

Displacement

3940 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6459

Medium

0.8859

High

1.0174

Triple Offshore

Low

0.8358

Medium

1.0841

High

1.2161

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: 23.78 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.

6,43.5,4.618305,52,5.12,60,5.4,75,5.77,90,5.95,110,5.71,120,5.52,135,4.98,143.9,4.505007,150,4.2
8,41.2,5.475702,52,6.11,60,6.35,75,6.71,90,6.87,110,6.78,120,6.66,135,6.17,148.4,5.436015,150,5.35
10,39.4,6.056421,52,6.71,60,6.88,75,7.16,90,7.34,110,7.34,120,7.28,135,6.96,150,6.32,152.3,6.200632
12,37.8,6.340528,52,7.02,60,7.18,75,7.37,90,7.68,110,7.74,120,7.74,135,7.46,150,7,158.3,6.651365
14,37.6,6.487526,52,7.18,60,7.37,75,7.58,90,7.91,110,8.11,120,8.16,135,7.93,150,7.46,171.8,6.83993
16,37.5,6.567061,52,7.25,60,7.46,75,7.78,90,8.07,110,8.49,120,8.58,135,8.4,150,7.9,177.2,7.248654
20,37.8,6.618954,52,7.32,60,7.56,75,7.98,90,8.35,110,9.25,120,9.58,135,9.66,150,8.86,177.2,8.059622

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.12	5.4	5.77	5.95	5.71	5.52	4.98	4.2
8	6.11	6.35	6.71	6.87	6.78	6.66	6.17	5.35
10	6.71	6.88	7.16	7.34	7.34	7.28	6.96	6.32
12	7.02	7.18	7.37	7.68	7.74	7.74	7.46	7
14	7.18	7.37	7.58	7.91	8.11	8.16	7.93	7.46
16	7.25	7.46	7.78	8.07	8.49	8.58	8.4	7.9
20	7.32	7.56	7.98	8.35	9.25	9.58	9.66	8.86

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.5°	3.35	143.9°	3.64
8	41.2°	4.12	148.4°	4.63
10	39.4°	4.68	152.3°	5.49
12	37.8°	5.01	158.3°	6.18
14	37.6°	5.14	171.8°	6.77
16	37.5°	5.21	177.2°	7.24
20	37.8°	5.23	177.2°	8.05

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