COBRA 24: ORC Rating

GPH

621.8

OSN

602.7

LOA

7.509 m

Displacement

821 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6514

Medium

0.8647

High

1.0235

Triple Offshore

Low

0.8372

Medium

1.0835

High

1.2794

Boat Specifications

Dimensions

Length overall: 7.509 m
Beam: 2.49 m
Draft: 1.52 m
Displacement: 821 kg
Crew weight: 510 kg
Wetted surface: 12.13 m²

Sails

Mainsail: 22.33 m²
Genoa: 12.13 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 56.18 m²

Design

Type: MELGES 24 OD
Builder: ROWEN
Designer: REICHEL/PUGH
Year built: 1992
Stability index: -1

Performance data

Polar CSV

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

4,44,3.391999,52,3.85,60,4.15,75,4.37,90,4.3,110,4.44,120,4.3,135,3.7,142.8,3.276713,150,3.01
6,44,4.67095,52,5.16,60,5.45,75,5.64,90,5.7,110,5.84,120,5.71,135,5.12,142.8,4.682812,150,4.31
8,41.8,5.473013,52,6.05,60,6.26,75,6.39,90,6.58,110,6.81,120,6.7,135,6.23,147.6,5.566558,150,5.43
10,39.3,5.892689,52,6.51,60,6.74,75,6.96,90,7.06,110,7.72,120,7.66,135,7.06,150,6.27,151.8,6.172675
12,37.9,6.03231,52,6.8,60,7.13,75,7.56,90,7.63,110,8.38,120,8.73,135,8.02,150,7.04,150.2,7.029549
14,37.7,6.10447,52,6.95,60,7.32,75,7.95,90,8.42,110,8.96,120,9.55,135,9.2,146.6,8.169153,150,7.87
16,37.8,6.163348,52,7.05,60,7.47,75,8.22,90,9,110,9.52,120,10.26,135,10.6,145.2,9.377102,150,8.89
20,38.4,6.252445,52,7.18,60,7.65,75,8.61,90,9.75,110,10.75,120,11.72,135,13.51,141.5,13.685009,150,12.37
24,39.7,6.264625,52,7.17,60,7.71,75,8.82,90,10.27,110,12.55,120,13.29,135,15.22,146.7,16.116154,150,15.56

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
4	3.85	4.15	4.37	4.3	4.44	4.3	3.7	3.01
6	5.16	5.45	5.64	5.7	5.84	5.71	5.12	4.31
8	6.05	6.26	6.39	6.58	6.81	6.7	6.23	5.43
10	6.51	6.74	6.96	7.06	7.72	7.66	7.06	6.27
12	6.8	7.13	7.56	7.63	8.38	8.73	8.02	7.04
14	6.95	7.32	7.95	8.42	8.96	9.55	9.2	7.87
16	7.05	7.47	8.22	9	9.52	10.26	10.6	8.89
20	7.18	7.65	8.61	9.75	10.75	11.72	13.51	12.37
24	7.17	7.71	8.82	10.27	12.55	13.29	15.22	15.56

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
4	44°	2.44	142.8°	2.61
6	44°	3.36	142.8°	3.73
8	41.8°	4.08	147.6°	4.7
10	39.3°	4.56	151.8°	5.44
12	37.9°	4.76	150.2°	6.1
14	37.7°	4.83	146.6°	6.82
16	37.8°	4.87	145.2°	7.7
20	38.4°	4.9	141.5°	10.71
24	39.7°	4.82	146.7°	13.47

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 4 kt6 kt8 kt10 kt12 kt14 kt16 kt20 kt24 kt

Data table

Boat speed by true wind angle and true wind speed
TWA	Boat speed in 4 kt (kt)	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)	Boat speed in 24 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	3.85	5.16	6.05	6.51	6.80	6.95	7.05	7.18	7.17
60°	4.15	5.45	6.26	6.74	7.13	7.32	7.47	7.65	7.71
75°	4.37	5.64	6.39	6.96	7.56	7.95	8.22	8.61	8.82
90°	4.30	5.70	6.58	7.06	7.63	8.42	9.00	9.75	10.27
110°	4.44	5.84	6.81	7.72	8.38	8.96	9.52	10.75	12.55
120°	4.30	5.71	6.70	7.66	8.73	9.55	10.26	11.72	13.29
135°	3.70	5.12	6.23	7.06	8.02	9.20	10.60	13.51	15.22
150°	3.01	4.31	5.43	6.27	7.04	7.87	8.89	12.37	15.56