CHUBASCO IV — ORC Rating

GPH

737.1

OSN

712.5

LOA

7.606 m

Displacement

1554 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5559

Medium

0.7588

High

0.8757

Triple Offshore

Low

0.7119

Medium

0.9176

High

1.034

Boat Specifications

Dimensions

Length overall: 7.606 m
Beam: 2.9 m
Draft: 1.5 m
Displacement: 1554 kg
Crew weight: 350 kg
Wetted surface: 12.95 m²

Sails

Mainsail: 17.97 m²
Genoa: 16.43 m²
Spinnaker: 36.08 m²
Asymmetric spinnaker: 0 m²

Design

Type: MANZANITA
Builder: GROP
Designer: R. HOLLAND
Year built: 1977

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.

6,42.6,4.10272,52,4.56,60,4.77,75,4.88,90,4.79,110,4.79,120,4.61,135,4.09,147.1,3.573046,150,3.47
8,41,4.809797,52,5.33,60,5.5,75,5.59,90,5.65,110,5.66,120,5.52,135,5.04,150,4.44,151.4,4.385051
10,39.1,5.231646,52,5.74,60,5.86,75,5.96,90,6.09,110,6.12,120,6.03,135,5.75,150,5.25,154.8,5.050689
12,37.5,5.47045,52,5.98,60,6.1,75,6.22,90,6.41,110,6.48,120,6.38,135,6.14,150,5.82,165.1,5.411972
14,36.4,5.5908,52,6.14,60,6.28,75,6.44,90,6.65,110,6.82,120,6.73,135,6.48,150,6.18,177.7,5.744628
16,36.2,5.663228,52,6.25,60,6.41,75,6.63,90,6.84,110,7.15,120,7.09,135,6.82,150,6.5,179,6.100929
20,36.9,5.714753,52,6.32,60,6.54,75,6.9,90,7.13,110,7.9,120,7.99,135,7.64,150,7.16,179,6.701021
24,38.9,5.718007,52,6.32,60,6.58,75,7.03,90,7.5,110,8.64,120,9.54,135,9.17,150,8.08,178.4,7.362871

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.56	4.77	4.88	4.79	4.79	4.61	4.09	3.47
8	5.33	5.5	5.59	5.65	5.66	5.52	5.04	4.44
10	5.74	5.86	5.96	6.09	6.12	6.03	5.75	5.25
12	5.98	6.1	6.22	6.41	6.48	6.38	6.14	5.82
14	6.14	6.28	6.44	6.65	6.82	6.73	6.48	6.18
16	6.25	6.41	6.63	6.84	7.15	7.09	6.82	6.5
20	6.32	6.54	6.9	7.13	7.9	7.99	7.64	7.16
24	6.32	6.58	7.03	7.5	8.64	9.54	9.17	8.08

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.6°	3.02	147.1°	3
8	41°	3.63	151.4°	3.85
10	39.1°	4.06	154.8°	4.57
12	37.5°	4.34	165.1°	5.23
14	36.4°	4.5	177.7°	5.74
16	36.2°	4.57	179°	6.1
20	36.9°	4.57	179°	6.7
24	38.9°	4.45	178.4°	7.36

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