ALTA PRESSÃO — ORC Rating

GPH

699.2

OSN

679.7

LOA

7.64 m

Displacement

1344 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5882

Medium

0.7928

High

0.8949

Triple Offshore

Low

0.7571

Medium

0.9644

High

1.0788

Boat Specifications

Dimensions

Length overall: 7.64 m
Beam: 2.38 m
Draft: 1.59 m
Displacement: 1344 kg
Crew weight: 280 kg
Wetted surface: 12.89 m²

Sails

Mainsail: 19.29 m²
Genoa: 16.07 m²
Spinnaker: 33.02 m²
Asymmetric spinnaker: 0 m²

Design

Type: SURPRISE
Builder: ARCHAMBAULT
Designer: JOUBERT-NIVELT
Year built: 1976

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.

6,42,4.279112,52,4.82,60,5.07,75,5.29,90,5.22,110,5.11,120,4.93,135,4.43,147,3.827486,150,3.7
8,40.9,5.06712,52,5.65,60,5.83,75,5.96,90,5.98,110,6.01,120,5.89,135,5.41,150,4.7,151,4.653451
10,38.6,5.502095,52,6.05,60,6.18,75,6.3,90,6.4,110,6.47,120,6.38,135,6.07,150,5.54,154,5.373867
12,37.5,5.634312,52,6.2,60,6.37,75,6.59,90,6.67,110,6.96,120,6.85,135,6.49,150,6.12,170,5.595001
14,37.1,5.667115,52,6.26,60,6.46,75,6.81,90,7.02,110,7.44,120,7.36,135,6.96,150,6.51,180,6.05
16,37.5,5.722545,52,6.29,60,6.51,75,6.93,90,7.32,110,7.76,120,7.95,135,7.47,150,6.95,180,6.42
20,38.2,5.738958,52,6.32,60,6.55,75,7.02,90,7.62,110,8.3,120,8.93,135,8.89,150,7.97,180,7.26

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.82	5.07	5.29	5.22	5.11	4.93	4.43	3.7
8	5.65	5.83	5.96	5.98	6.01	5.89	5.41	4.7
10	6.05	6.18	6.3	6.4	6.47	6.38	6.07	5.54
12	6.2	6.37	6.59	6.67	6.96	6.85	6.49	6.12
14	6.26	6.46	6.81	7.02	7.44	7.36	6.96	6.51
16	6.29	6.51	6.93	7.32	7.76	7.95	7.47	6.95
20	6.32	6.55	7.02	7.62	8.3	8.93	8.89	7.97

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	3.18	147°	3.21
8	40.9°	3.83	151°	4.07
10	38.6°	4.3	154°	4.83
12	37.5°	4.47	170°	5.51
14	37.1°	4.52	180°	6.05
16	37.5°	4.54	180°	6.42
20	38.2°	4.51	180°	7.26

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