ALKA — ORC Rating | RegattaPages

GPH

740.7

OSN

717.5

LOA

9.12 m

Displacement

4066 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5486

Medium

0.7447

High

0.8649

Triple Offshore

Low

0.7035

Medium

0.9158

High

1.0281

Boat Specifications

Dimensions

Length overall: 9.12 m
Beam: 3.09 m
Draft: 1.59 m
Displacement: 4066 kg
Crew weight: 460 kg
Wetted surface: 18.93 m²

Sails

Mainsail: 17.89 m²
Genoa: 30.92 m²
Spinnaker: 62.69 m²
Asymmetric spinnaker: 55.87 m²

Design

Type: Conrad 30
Builder: Poland
Designer: Carter
Year built: 1976
Stability index: 113.4

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.

6,43.6,3.921721,52,4.34,60,4.59,75,4.77,90,4.71,110,4.75,120,4.63,135,4.25,147.9,3.742082,150,3.66
8,41.8,4.520602,52,5.1,60,5.39,75,5.61,90,5.61,110,5.75,120,5.63,135,5.17,150,4.58,152.3,4.495176
10,42.4,5.132335,52,5.7,60,5.92,75,6.08,90,6.19,110,6.29,120,6.23,135,5.97,150,5.4,152,5.311754
12,41.4,5.519183,52,6.03,60,6.19,75,6.32,90,6.49,110,6.6,120,6.56,135,6.37,150,6.05,159.2,5.733689
14,40.6,5.689666,52,6.2,60,6.35,75,6.51,90,6.7,110,6.89,120,6.86,135,6.67,150,6.4,173,5.944308
16,40,5.743792,52,6.27,60,6.45,75,6.66,90,6.86,110,7.15,120,7.17,135,6.98,150,6.67,179,6.280957
20,40.5,5.799534,52,6.31,60,6.51,75,6.86,90,7.1,110,7.56,120,7.67,135,7.58,150,7.25,179,6.811037

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.34	4.59	4.77	4.71	4.75	4.63	4.25	3.66
8	5.1	5.39	5.61	5.61	5.75	5.63	5.17	4.58
10	5.7	5.92	6.08	6.19	6.29	6.23	5.97	5.4
12	6.03	6.19	6.32	6.49	6.6	6.56	6.37	6.05
14	6.2	6.35	6.51	6.7	6.89	6.86	6.67	6.4
16	6.27	6.45	6.66	6.86	7.15	7.17	6.98	6.67
20	6.31	6.51	6.86	7.1	7.56	7.67	7.58	7.25

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.6°	2.84	147.9°	3.17
8	41.8°	3.37	152.3°	3.98
10	42.4°	3.79	152°	4.69
12	41.4°	4.14	159.2°	5.36
14	40.6°	4.32	173°	5.9
16	40°	4.4	179°	6.28
20	40.5°	4.41	179°	6.81

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