CHAPU CHAPU — ORC Rating

GPH

650.2

OSN

633.3

LOA

7.5 m

Displacement

1052 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6429

Medium

0.8301

High

0.9492

Triple Offshore

Low

0.8225

Medium

1.03

High

1.1707

Boat Specifications

Dimensions

Length overall: 7.5 m
Beam: 2.46 m
Draft: 1.7 m
Displacement: 1052 kg
Crew weight: 270 kg
Wetted surface: 12.97 m²

Sails

Mainsail: 22.8 m²
Genoa: 13.24 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 49.22 m²

Design

Type: BULL 7000
Builder: GREG YOUNG
Designer: GREG YOUNG
Year built: 1994

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.

6,42.8,4.511197,52,5.05,60,5.35,75,5.6,90,5.6,110,5.68,120,5.55,135,5.01,144,4.536369,150,4.24
8,41.4,5.385869,52,5.96,60,6.13,75,6.27,90,6.39,110,6.52,120,6.43,135,6.09,147.8,5.483382,150,5.36
10,39.2,5.729443,52,6.3,60,6.49,75,6.71,90,6.75,110,7.21,120,7.14,135,6.72,150,6.18,151.4,6.093512
12,38.4,5.805842,52,6.42,60,6.67,75,7.1,90,7.27,110,7.7,120,7.95,135,7.42,149.5,6.696616,150,6.66
14,38.4,5.844122,52,6.47,60,6.75,75,7.29,90,7.76,110,8.12,120,8.59,135,8.33,146.5,7.519015,150,7.24
16,38.2,5.904383,52,6.53,60,6.82,75,7.4,90,8.06,110,8.52,120,9.11,135,9.4,144.5,8.549155,150,8.04
20,39.4,5.965834,52,6.62,60,6.98,75,7.65,90,8.34,110,9.5,120,10.17,135,11.76,140.5,11.961775,150,10.65

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.05	5.35	5.6	5.6	5.68	5.55	5.01	4.24
8	5.96	6.13	6.27	6.39	6.52	6.43	6.09	5.36
10	6.3	6.49	6.71	6.75	7.21	7.14	6.72	6.18
12	6.42	6.67	7.1	7.27	7.7	7.95	7.42	6.66
14	6.47	6.75	7.29	7.76	8.12	8.59	8.33	7.24
16	6.53	6.82	7.4	8.06	8.52	9.11	9.4	8.04
20	6.62	6.98	7.65	8.34	9.5	10.17	11.76	10.65

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.31	144°	3.67
8	41.4°	4.04	147.8°	4.64
10	39.2°	4.44	151.4°	5.35
12	38.4°	4.55	149.5°	5.77
14	38.4°	4.58	146.5°	6.27
16	38.2°	4.64	144.5°	6.96
20	39.4°	4.61	140.5°	9.23

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