ALGOL V — ORC Rating | RegattaPages

GPH

560.2

OSN

544.5

LOA

17.5 m

Displacement

23090 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.73

Medium

0.9774

High

1.1307

Triple Offshore

Low

0.9389

Medium

1.208

High

1.3447

Boat Specifications

Dimensions

Length overall: 17.5 m
Beam: 4.74 m
Draft: 2.81 m
Displacement: 23090 kg
Crew weight: 1054 kg
Wetted surface: 59.79 m²

Sails

Mainsail: 69.83 m²
Genoa: 121.96 m²
Spinnaker: 261.06 m²
Asymmetric spinnaker: 0 m²

Design

Type: SWAN 57 DK Sloop
Builder: NAUTOR SWAN
Designer: STEPHENS Olin
Year built: 1977
Stability index: 125.9

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.

6,43.2,5.500923,52,6.1,60,6.4,75,6.59,90,6.45,110,6.06,120,5.96,135,5.39,140.6,5.085841,150,4.54
8,40.8,6.34086,52,7.11,60,7.39,75,7.56,90,7.47,110,7.33,120,7.25,135,6.73,148.4,5.835204,150,5.74
10,40.5,6.891056,52,7.7,60,7.96,75,8.14,90,8.13,110,8.17,120,8.14,135,7.76,148.2,7.000884,150,6.87
12,39.6,7.151078,52,7.98,60,8.24,75,8.45,90,8.51,110,8.61,120,8.65,135,8.43,150,7.79,154.1,7.548153
14,39.4,7.337587,52,8.15,60,8.39,75,8.65,90,8.76,110,8.86,120,8.98,135,8.87,150,8.41,158.6,8.001669
16,39,7.43747,52,8.25,60,8.49,75,8.77,90,8.94,110,9.04,120,9.25,135,9.21,150,8.84,169.1,8.167349
20,38.4,7.541214,52,8.37,60,8.61,75,8.94,90,9.22,110,9.31,120,9.59,135,9.83,150,9.52,179,8.891354

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.1	6.4	6.59	6.45	6.06	5.96	5.39	4.54
8	7.11	7.39	7.56	7.47	7.33	7.25	6.73	5.74
10	7.7	7.96	8.14	8.13	8.17	8.14	7.76	6.87
12	7.98	8.24	8.45	8.51	8.61	8.65	8.43	7.79
14	8.15	8.39	8.65	8.76	8.86	8.98	8.87	8.41
16	8.25	8.49	8.77	8.94	9.04	9.25	9.21	8.84
20	8.37	8.61	8.94	9.22	9.31	9.59	9.83	9.52

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	4.01	140.6°	3.93
8	40.8°	4.8	148.4°	4.97
10	40.5°	5.24	148.2°	5.95
12	39.6°	5.51	154.1°	6.79
14	39.4°	5.67	158.6°	7.45
16	39°	5.78	169.1°	8.02
20	38.4°	5.91	179°	8.89

Loading polar chart…