CHAPU CHAPU — ORC Rating

GPH

647.3

OSN

629.1

LOA

7.5 m

Displacement

1110 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6449

Medium

0.8412

High

0.9704

Triple Offshore

Low

0.8222

Medium

1.0356

High

1.1861

Boat Specifications

Dimensions

Length overall: 7.5 m
Beam: 2.46 m
Draft: 1.7 m
Displacement: 1110 kg
Crew weight: 300 kg
Wetted surface: 13.21 m²

Sails

Mainsail: 23.48 m²
Genoa: 13.24 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 52.87 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.

6,43,4.59422,52,5.08,60,5.34,75,5.52,90,5.5,110,5.63,120,5.52,135,5.04,140.1,4.809916,150,4.26
8,40.5,5.326102,52,5.92,60,6.1,75,6.23,90,6.31,110,6.51,120,6.44,135,6.12,148,5.424221,150,5.31
10,38.1,5.680266,52,6.32,60,6.51,75,6.68,90,6.69,110,7.15,120,7.16,135,6.77,150,6.13,153.8,5.929173
12,37.8,5.834298,52,6.49,60,6.73,75,7.07,90,7.18,110,7.63,120,7.86,135,7.46,150,6.78,159.1,6.358351
14,37.6,5.906931,52,6.59,60,6.87,75,7.3,90,7.64,110,8.02,120,8.51,135,8.34,150,7.4,161.9,6.827872
16,37.6,5.957417,52,6.66,60,6.96,75,7.47,90,8,110,8.41,120,9.03,135,9.35,150,8.15,151.6,8.037301
20,38.1,6.036077,52,6.76,60,7.09,75,7.72,90,8.5,110,9.23,120,10.14,135,12.01,142.1,11.874527,150,10.81
24,39.5,6.039206,52,6.74,60,7.11,75,7.83,90,8.85,110,10.5,120,11.41,135,13.68,147.2,14.466432,150,14.04

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.08	5.34	5.52	5.5	5.63	5.52	5.04	4.26
8	5.92	6.1	6.23	6.31	6.51	6.44	6.12	5.31
10	6.32	6.51	6.68	6.69	7.15	7.16	6.77	6.13
12	6.49	6.73	7.07	7.18	7.63	7.86	7.46	6.78
14	6.59	6.87	7.3	7.64	8.02	8.51	8.34	7.4
16	6.66	6.96	7.47	8	8.41	9.03	9.35	8.15
20	6.76	7.09	7.72	8.5	9.23	10.14	12.01	10.81
24	6.74	7.11	7.83	8.85	10.5	11.41	13.68	14.04

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.36	140.1°	3.69
8	40.5°	4.05	148°	4.6
10	38.1°	4.47	153.8°	5.32
12	37.8°	4.61	159.1°	5.94
14	37.6°	4.68	161.9°	6.49
16	37.6°	4.72	151.6°	7.07
20	38.1°	4.75	142.1°	9.37
24	39.5°	4.66	147.2°	12.16

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