IMPULSO — ORC Rating | RegattaPages

GPH

614.3

OSN

600.5

LOA

9.95 m

Displacement

4060 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6787

Medium

0.8858

High

0.9875

Triple Offshore

Low

0.8758

Medium

1.0927

High

1.1995

Boat Specifications

Dimensions

Length overall: 9.95 m
Beam: 3.41 m
Draft: 1.99 m
Displacement: 4060 kg
Crew weight: 350 kg
Wetted surface: 24.23 m²

Sails

Mainsail: 34.38 m²
Genoa: 27.55 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 99.62 m²

Design

Type: J 99
Builder: J-COMPOSITES
Designer: JOHNSTONE
Year built: 2019

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.

6,42.8,4.960954,52,5.55,60,5.88,75,6.19,90,6.15,110,5.87,120,5.72,135,5.12,144,4.635255,150,4.33
8,41.6,5.857196,52,6.53,60,6.77,75,6.94,90,6.93,110,6.93,120,6.82,135,6.33,147.5,5.584595,150,5.43
10,40.1,6.275155,52,6.93,60,7.13,75,7.3,90,7.3,110,7.42,120,7.36,135,7.07,148.5,6.485737,150,6.39
12,39,6.42093,52,7.08,60,7.29,75,7.55,90,7.61,110,7.82,120,7.84,135,7.53,150,6.99,150.5,6.962671
14,38.6,6.50015,52,7.15,60,7.38,75,7.72,90,7.92,110,8.09,120,8.34,135,8.03,150,7.34,174,6.465418
16,39,6.575341,52,7.2,60,7.45,75,7.82,90,8.17,110,8.35,120,8.7,135,8.58,150,7.67,177,6.969552
20,39,6.588209,52,7.21,60,7.49,75,7.91,90,8.41,110,8.78,120,9.29,135,9.98,150,8.63,177,7.680526

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.55	5.88	6.19	6.15	5.87	5.72	5.12	4.33
8	6.53	6.77	6.94	6.93	6.93	6.82	6.33	5.43
10	6.93	7.13	7.3	7.3	7.42	7.36	7.07	6.39
12	7.08	7.29	7.55	7.61	7.82	7.84	7.53	6.99
14	7.15	7.38	7.72	7.92	8.09	8.34	8.03	7.34
16	7.2	7.45	7.82	8.17	8.35	8.7	8.58	7.67
20	7.21	7.49	7.91	8.41	8.78	9.29	9.98	8.63

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.64	144°	3.75
8	41.6°	4.38	147.5°	4.71
10	40.1°	4.8	148.5°	5.53
12	39°	4.99	150.5°	6.06
14	38.6°	5.08	174°	6.43
16	39°	5.11	177°	6.96
20	39°	5.12	177°	7.67

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