CHACHA 3 — ORC Rating

GPH

561

OSN

543.7

LOA

14.5 m

Displacement

12530 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7158

Medium

0.9817

High

1.1437

Triple Offshore

Low

0.9262

Medium

1.2115

High

1.3625

Boat Specifications

Dimensions

Length overall: 14.5 m
Beam: 4.51 m
Draft: 2.82 m
Displacement: 12530 kg
Crew weight: 962 kg
Wetted surface: 44.37 m²

Sails

Mainsail: 67.11 m²
Genoa: 68.23 m²
Spinnaker: 132.15 m²
Asymmetric spinnaker: 0 m²

Design

Type: FIRST 47.7 (9/10)
Builder: BENETEAU
Designer: FARR
Year built: 1999
Stability index: 117.6

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.

6,43,5.441963,52,6.06,60,6.38,75,6.61,90,6.48,110,6.01,120,5.81,135,5.18,140.6,4.865843,150,4.34
8,40.8,6.393701,52,7.16,60,7.43,75,7.61,90,7.53,110,7.32,120,7.13,135,6.5,147.5,5.715021,150,5.57
10,39.3,7.00403,52,7.8,60,8.02,75,8.17,90,8.15,110,8.15,120,8.02,135,7.52,150,6.64,151.1,6.567942
12,38.2,7.304129,52,8.12,60,8.33,75,8.5,90,8.54,110,8.63,120,8.56,135,8.2,150,7.53,154.6,7.273047
14,37.5,7.436787,52,8.27,60,8.49,75,8.73,90,8.83,110,9,120,8.98,135,8.67,150,8.18,161,7.678326
16,37,7.500293,52,8.36,60,8.58,75,8.89,90,9.08,110,9.32,120,9.37,135,9.09,150,8.62,173,7.929102
20,37.2,7.633109,52,8.46,60,8.69,75,9.08,90,9.45,110,9.72,120,10.06,135,9.93,150,9.42,179,8.761334

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.06	6.38	6.61	6.48	6.01	5.81	5.18	4.34
8	7.16	7.43	7.61	7.53	7.32	7.13	6.5	5.57
10	7.8	8.02	8.17	8.15	8.15	8.02	7.52	6.64
12	8.12	8.33	8.5	8.54	8.63	8.56	8.2	7.53
14	8.27	8.49	8.73	8.83	9	8.98	8.67	8.18
16	8.36	8.58	8.89	9.08	9.32	9.37	9.09	8.62
20	8.46	8.69	9.08	9.45	9.72	10.06	9.93	9.42

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.98	140.6°	3.76
8	40.8°	4.84	147.5°	4.82
10	39.3°	5.42	151.1°	5.75
12	38.2°	5.74	154.6°	6.57
14	37.5°	5.9	161°	7.26
16	37°	5.99	173°	7.87
20	37.2°	6.08	179°	8.76

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