CHAYKA — ORC Rating | RegattaPages

GPH

726.5

OSN

706.9

LOA

7.65 m

Displacement

1495 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5759

Medium

0.7657

High

0.8528

Triple Offshore

Low

0.7365

Medium

0.9251

High

1.0185

Boat Specifications

Dimensions

Length overall: 7.65 m
Beam: 2.76 m
Draft: 1.51 m
Displacement: 1495 kg
Crew weight: 333 kg
Wetted surface: 12.26 m²

Sails

Mainsail: 17.81 m²
Genoa: 15.55 m²
Spinnaker: 43.2 m²
Asymmetric spinnaker: 0 m²

Design

Type: Conrad-25R
Builder: Conrad, Poland
Designer: Peterson
Year built: 1978

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.

6,41.2,4.066905,52,4.61,60,4.85,75,5.01,90,5.01,110,5.06,120,4.87,135,4.34,148,3.820538,150,3.74
8,41.2,4.837756,52,5.37,60,5.55,75,5.66,90,5.77,110,5.83,120,5.74,135,5.34,150,4.68,152,4.586909
10,39,5.224244,52,5.73,60,5.85,75,5.96,90,6.13,110,6.23,120,6.16,135,5.93,150,5.47,154,5.318237
12,37.9,5.385991,52,5.9,60,6.04,75,6.2,90,6.37,110,6.62,120,6.57,135,6.3,150,5.98,174,5.48002
14,37.9,5.449356,52,5.98,60,6.17,75,6.41,90,6.52,110,6.96,120,6.97,135,6.7,150,6.32,180,5.9
16,38.1,5.464238,52,6.01,60,6.23,75,6.56,90,6.76,110,7.2,120,7.35,135,7.11,150,6.69,180,6.23
20,39.4,5.461132,52,5.99,60,6.23,75,6.68,90,7.09,110,7.51,120,7.91,135,8.05,150,7.46,180,6.93

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.61	4.85	5.01	5.01	5.06	4.87	4.34	3.74
8	5.37	5.55	5.66	5.77	5.83	5.74	5.34	4.68
10	5.73	5.85	5.96	6.13	6.23	6.16	5.93	5.47
12	5.9	6.04	6.2	6.37	6.62	6.57	6.3	5.98
14	5.98	6.17	6.41	6.52	6.96	6.97	6.7	6.32
16	6.01	6.23	6.56	6.76	7.2	7.35	7.11	6.69
20	5.99	6.23	6.68	7.09	7.51	7.91	8.05	7.46

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.2°	3.06	148°	3.24
8	41.2°	3.64	152°	4.05
10	39°	4.06	154°	4.78
12	37.9°	4.25	174°	5.45
14	37.9°	4.3	180°	5.9
16	38.1°	4.3	180°	6.23
20	39.4°	4.22	180°	6.93

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