ST 23 — ORC Rating | RegattaPages

GPH

658.8

OSN

639.4

LOA

7.206 m

Displacement

668 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6927

Medium

0.9252

High

1.0675

Triple Offshore

Low

0.8929

Medium

1.1511

High

1.341

Boat Specifications

Dimensions

Length overall: 7.206 m
Beam: 2.44 m
Draft: 1.7 m
Displacement: 668 kg
Crew weight: 316 kg
Wetted surface: 11.32 m²

Sails

Mainsail: 22.44 m²
Genoa: 10.79 m²
Spinnaker: 30.38 m²
Asymmetric spinnaker: 0 m²

Design

Type: ST 23
Builder: -
Designer: Steve Thompson
Year built: 1995

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.

6,42.6,4.537445,52,5.08,60,5.36,75,5.56,90,5.52,110,5.42,120,5.22,135,4.63,137.2,4.511197,150,3.83
8,40.3,5.349639,52,5.89,60,6.05,75,6.18,90,6.25,110,6.25,120,6.12,135,5.72,148.9,4.940047,150,4.89
10,37.1,5.616964,52,6.25,60,6.5,75,6.77,90,6.86,110,7.03,120,6.83,135,6.36,150,5.79,155.2,5.552021
12,36.2,5.688012,52,6.42,60,6.74,75,7.26,90,7.5,110,7.91,120,7.75,135,7.05,150,6.41,171.9,5.77764
14,36.1,5.73027,52,6.51,60,6.87,75,7.51,90,8.13,110,8.55,120,8.8,135,7.95,150,7.04,180,6.28
16,36,5.784798,52,6.61,60,6.96,75,7.68,90,8.5,110,9.11,120,9.76,135,8.97,150,7.83,180,6.84
20,36.7,5.824572,52,6.73,60,7.18,75,8.07,90,8.92,110,10.6,120,11.26,135,12.37,136.3,12.296548,150,10.26

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.08	5.36	5.56	5.52	5.42	5.22	4.63	3.83
8	5.89	6.05	6.18	6.25	6.25	6.12	5.72	4.89
10	6.25	6.5	6.77	6.86	7.03	6.83	6.36	5.79
12	6.42	6.74	7.26	7.5	7.91	7.75	7.05	6.41
14	6.51	6.87	7.51	8.13	8.55	8.8	7.95	7.04
16	6.61	6.96	7.68	8.5	9.11	9.76	8.97	7.83
20	6.73	7.18	8.07	8.92	10.6	11.26	12.37	10.26

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.6°	3.34	137.2°	3.31
8	40.3°	4.08	148.9°	4.23
10	37.1°	4.48	155.2°	5.04
12	36.2°	4.59	171.9°	5.72
14	36.1°	4.63	180°	6.28
16	36°	4.68	180°	6.84
20	36.7°	4.67	136.3°	8.89

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