UN MAR SIN BARRERAS — ORC Rating

GPH

738.1

OSN

714.8

LOA

7.067 m

Displacement

940 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.55

Medium

0.7471

High

0.8546

Triple Offshore

Low

0.7092

Medium

0.9154

High

1.0478

Boat Specifications

Dimensions

Length overall: 7.067 m
Beam: 2.38 m
Draft: 1.18 m
Displacement: 940 kg
Crew weight: 310 kg
Wetted surface: 11.3 m²

Sails

Mainsail: 18.15 m²
Genoa: 9.08 m²
Spinnaker: 29.59 m²
Asymmetric spinnaker: 0 m²

Design

Type: SONAR 23
Builder: SONAR (UK) LDT
Designer: KIRBY
Year built: 1979

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.

6,43.7,3.928256,52,4.37,60,4.62,75,4.78,90,4.92,110,4.94,120,4.78,135,4.31,146,3.775462,150,3.61
8,41.5,4.606414,52,5.16,60,5.37,75,5.51,90,5.72,110,5.75,120,5.64,135,5.23,150,4.6,151,4.561983
10,40.2,5.053705,52,5.61,60,5.77,75,5.91,90,6.19,110,6.26,120,6.16,135,5.84,150,5.39,156.8,5.135261
12,39.5,5.365303,52,5.88,60,6.05,75,6.23,90,6.57,110,6.74,120,6.63,135,6.28,150,5.91,170,5.432532
14,38.8,5.504672,52,6.07,60,6.28,75,6.53,90,6.81,110,7.26,120,7.13,135,6.74,150,6.33,178.1,5.843213
16,39,5.558801,52,6.16,60,6.43,75,6.78,90,6.98,110,7.83,120,7.78,135,7.26,150,6.75,178.6,6.23186
20,41.3,5.643821,52,6.21,60,6.53,75,7.08,90,7.64,110,8.99,120,10.21,135,9.14,150,7.86,177.9,7.024718
24,42.9,5.692499,52,6.22,60,6.57,75,7.22,90,8.2,110,10.25,120,11.89,135,13.02,139.8,12.333136,150,10.88

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.37	4.62	4.78	4.92	4.94	4.78	4.31	3.61
8	5.16	5.37	5.51	5.72	5.75	5.64	5.23	4.6
10	5.61	5.77	5.91	6.19	6.26	6.16	5.84	5.39
12	5.88	6.05	6.23	6.57	6.74	6.63	6.28	5.91
14	6.07	6.28	6.53	6.81	7.26	7.13	6.74	6.33
16	6.16	6.43	6.78	6.98	7.83	7.78	7.26	6.75
20	6.21	6.53	7.08	7.64	8.99	10.21	9.14	7.86
24	6.22	6.57	7.22	8.2	10.25	11.89	13.02	10.88

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.7°	2.84	146°	3.13
8	41.5°	3.45	151°	3.99
10	40.2°	3.86	156.8°	4.72
12	39.5°	4.14	170°	5.35
14	38.8°	4.29	178.1°	5.84
16	39°	4.32	178.6°	6.23
20	41.3°	4.24	177.9°	7.02
24	42.9°	4.17	139.8°	9.42

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