NiksLoos: ORC Rating

GPH

712.4

OSN

691.3

LOA

8.803 m

Displacement

2347 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5755

Medium

0.7793

High

0.8796

Triple Offshore

Low

0.7427

Medium

0.9484

High

1.0498

Boat Specifications

Dimensions

Length overall: 8.803 m
Beam: 2.77 m
Draft: 1.5 m
Displacement: 2347 kg
Crew weight: 350 kg
Wetted surface: 15.96 m²

Sails

Mainsail: 24.6 m²
Genoa: 13.27 m²
Spinnaker: 48.79 m²
Asymmetric spinnaker: 37.45 m²

Design

Type: Marathon 28
Builder: Bood Jachtb.
Designer: v.d.Stadt/Bood JB
Year built: 1993
Stability index: 117.9

Performance data

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into Offwind or compatible navigation software.

6,43.9,4.16348,52,4.6,60,4.85,75,5.02,90,5.16,110,5.18,120,5,135,4.45,146,3.920208,150,3.75
8,41.8,4.869372,52,5.41,60,5.63,75,5.78,90,5.98,110,6.04,120,5.93,135,5.47,150,4.78,151.4,4.715353
10,40,5.299954,52,5.87,60,6.03,75,6.17,90,6.38,110,6.47,120,6.41,135,6.16,150,5.64,153.8,5.472225
12,38.8,5.530335,52,6.1,60,6.26,75,6.41,90,6.62,110,6.79,120,6.76,135,6.54,150,6.22,164.6,5.798181
14,38.4,5.61444,52,6.22,60,6.38,75,6.58,90,6.82,110,7.09,120,7.1,135,6.89,150,6.57,177.2,6.117303
16,39,5.700345,52,6.27,60,6.45,75,6.72,90,6.97,110,7.43,120,7.5,135,7.27,150,6.9,179,6.460984
20,40.5,5.760081,52,6.29,60,6.5,75,6.85,90,7.21,110,8.02,120,8.39,135,8.38,150,7.71,178.4,7.102769

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.6	4.85	5.02	5.16	5.18	5	4.45	3.75
8	5.41	5.63	5.78	5.98	6.04	5.93	5.47	4.78
10	5.87	6.03	6.17	6.38	6.47	6.41	6.16	5.64
12	6.1	6.26	6.41	6.62	6.79	6.76	6.54	6.22
14	6.22	6.38	6.58	6.82	7.09	7.1	6.89	6.57
16	6.27	6.45	6.72	6.97	7.43	7.5	7.27	6.9
20	6.29	6.5	6.85	7.21	8.02	8.39	8.38	7.71

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.9°	3	146°	3.25
8	41.8°	3.63	151.4°	4.14
10	40°	4.06	153.8°	4.91
12	38.8°	4.31	164.6°	5.59
14	38.4°	4.4	177.2°	6.11
16	39°	4.43	179°	6.46
20	40.5°	4.38	178.4°	7.1

VPP POLAR · BOAT SPEED BY TWAKT

TRUE WIND ANGLE —

READ AT ANGLE

Hover or tap the chart, or use the slider, to read boat speeds.

True wind speed 6 kt8 kt10 kt12 kt14 kt16 kt20 kt

Data table

Boat speed by true wind angle and true wind speed
TWA	Boat speed in 6 kt (kt)	Boat speed in 8 kt (kt)	Boat speed in 10 kt (kt)	Boat speed in 12 kt (kt)	Boat speed in 14 kt (kt)	Boat speed in 16 kt (kt)	Boat speed in 20 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	4.60	5.41	5.87	6.10	6.22	6.27	6.29
60°	4.85	5.63	6.03	6.26	6.38	6.45	6.50
75°	5.02	5.78	6.17	6.41	6.58	6.72	6.85
90°	5.16	5.98	6.38	6.62	6.82	6.97	7.21
110°	5.18	6.04	6.47	6.79	7.09	7.43	8.02
120°	5.00	5.93	6.41	6.76	7.10	7.50	8.39
135°	4.45	5.47	6.16	6.54	6.89	7.27	8.38
150°	3.75	4.78	5.64	6.22	6.57	6.90	7.71