UN MAR SIN BARRERAS — ORC Rating

GPH

738.9

OSN

720.5

LOA

7 m

Displacement

940 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6403

Medium

0.8387

High

0.9217

Triple Offshore

Low

0.8189

Medium

1.0201

High

1.1269

Boat Specifications

Dimensions

Length overall: 7 m
Beam: 2.41 m
Draft: 1.19 m
Displacement: 940 kg
Crew weight: 310 kg
Wetted surface: 9.34 m²

Sails

Mainsail: 18.14 m²
Genoa: 9.08 m²
Spinnaker: 29.52 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.

6,42.4,3.967742,52,4.45,60,4.69,75,4.9,90,5.06,110,5.09,120,4.96,135,4.51,148.1,3.898834,150,3.83
8,42,4.696258,52,5.19,60,5.37,75,5.49,90,5.7,110,5.73,120,5.65,135,5.36,150,4.77,151.7,4.701995
10,40.4,5.081819,52,5.54,60,5.68,75,5.8,90,6.1,110,6.19,120,6.1,135,5.82,150,5.47,159.3,5.163323
12,39.2,5.226181,52,5.72,60,5.9,75,6.1,90,6.39,110,6.66,120,6.55,135,6.24,150,5.88,180,5.43
14,39.5,5.274586,52,5.8,60,6.04,75,6.36,90,6.55,110,7.08,120,7.02,135,6.67,150,6.28,180,5.83
16,40.4,5.29192,52,5.81,60,6.09,75,6.52,90,6.8,110,7.4,120,7.58,135,7.16,150,6.69,180,6.21
20,42.4,5.32192,52,5.81,60,6.1,75,6.6,90,7.17,110,7.97,120,8.74,135,8.86,150,7.74,180,7

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.45	4.69	4.9	5.06	5.09	4.96	4.51	3.83
8	5.19	5.37	5.49	5.7	5.73	5.65	5.36	4.77
10	5.54	5.68	5.8	6.1	6.19	6.1	5.82	5.47
12	5.72	5.9	6.1	6.39	6.66	6.55	6.24	5.88
14	5.8	6.04	6.36	6.55	7.08	7.02	6.67	6.28
16	5.81	6.09	6.52	6.8	7.4	7.58	7.16	6.69
20	5.81	6.1	6.6	7.17	7.97	8.74	8.86	7.74

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	2.93	148.1°	3.31
8	42°	3.49	151.7°	4.14
10	40.4°	3.87	159.3°	4.83
12	39.2°	4.05	180°	5.43
14	39.5°	4.07	180°	5.83
16	40.4°	4.03	180°	6.21
20	42.4°	3.93	180°	7

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