MARATHON DOS — ORC Rating

GPH

686.2

OSN

664.7

LOA

8.792 m

Displacement

3485 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.591

Medium

0.8008

High

0.9184

Triple Offshore

Low

0.7599

Medium

0.9894

High

1.1089

Boat Specifications

Dimensions

Length overall: 8.792 m
Beam: 3.26 m
Draft: 2.02 m
Displacement: 3485 kg
Crew weight: 420 kg
Wetted surface: 20.85 m²

Sails

Mainsail: 26.76 m²
Genoa: 22.86 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 59.09 m²

Design

Type: ASTRAEA 295
Builder: ASTRAEA
Designer: A.URIARTE
Year built: 2002
Stability index: 120.3

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.

6,43,4.293408,52,4.76,60,5,75,5.14,90,5.14,110,5.15,120,4.95,135,4.44,145.1,3.974874,150,3.76
8,40.6,5.03114,52,5.64,60,5.86,75,6.01,90,6.13,110,6.19,120,6.02,135,5.52,146.9,4.95393,150,4.8
10,39.4,5.590543,52,6.21,60,6.38,75,6.51,90,6.69,110,6.76,120,6.67,135,6.33,147.1,5.812154,150,5.64
12,38.1,5.896294,52,6.52,60,6.67,75,6.81,90,7.02,110,7.17,120,7.09,135,6.81,148.2,6.353743,150,6.24
14,37.6,6.020525,52,6.67,60,6.84,75,7.04,90,7.22,110,7.54,120,7.5,135,7.22,150,6.64,171.2,5.899446
16,37.2,6.063802,52,6.74,60,6.94,75,7.23,90,7.36,110,7.87,120,7.89,135,7.62,150,6.95,175.4,6.360488
20,37.6,6.108877,52,6.79,60,7.02,75,7.42,90,7.76,110,8.34,120,8.71,135,8.48,150,7.56,177.2,7.028391

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.76	5	5.14	5.14	5.15	4.95	4.44	3.76
8	5.64	5.86	6.01	6.13	6.19	6.02	5.52	4.8
10	6.21	6.38	6.51	6.69	6.76	6.67	6.33	5.64
12	6.52	6.67	6.81	7.02	7.17	7.09	6.81	6.24
14	6.67	6.84	7.04	7.22	7.54	7.5	7.22	6.64
16	6.74	6.94	7.23	7.36	7.87	7.89	7.62	6.95
20	6.79	7.02	7.42	7.76	8.34	8.71	8.48	7.56

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.14	145.1°	3.26
8	40.6°	3.82	146.9°	4.15
10	39.4°	4.32	147.1°	4.88
12	38.1°	4.64	148.2°	5.4
14	37.6°	4.77	171.2°	5.83
16	37.2°	4.83	175.4°	6.34
20	37.6°	4.84	177.2°	7.02

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