4ALL: ORC Rating

GPH

825.6

OSN

798.9

LOA

5.51 m

Displacement

525 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.477

Medium

0.6626

High

0.7843

Triple Offshore

Low

0.6194

Medium

0.8224

High

0.974

Boat Specifications

Dimensions

Length overall: 5.51 m
Beam: 2.05 m
Draft: 1.12 m
Displacement: 525 kg
Crew weight: 282 kg
Wetted surface: 8.18 m²

Sails

Mainsail: 10.51 m²
Genoa: 6.46 m²
Spinnaker: 20.2 m²
Asymmetric spinnaker: 0 m²

Design

Type: C-55
Designer: Pelle Petterson
Year built: 2001

Performance data

Polar CSV

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

6,44.6,3.384708,52,3.74,60,3.98,75,4.16,90,4.35,110,4.39,120,4.23,135,3.72,149,3.243241,150,3.21
8,43.9,4.052454,52,4.48,60,4.73,75,4.93,90,5.19,110,5.22,120,5.11,135,4.64,150,4.1,153,3.995481
10,41.6,4.453074,52,4.96,60,5.18,75,5.35,90,5.64,110,5.68,120,5.58,135,5.33,150,4.87,156,4.641258
12,40.9,4.776058,52,5.27,60,5.44,75,5.66,90,6.09,110,6.19,120,6.06,135,5.74,150,5.4,180,4.93
14,40.5,4.997331,52,5.47,60,5.67,75,5.95,90,6.49,110,6.79,120,6.62,135,6.22,150,5.78,180,5.37
16,39.9,5.122756,52,5.66,60,5.94,75,6.27,90,6.7,110,7.48,120,7.32,135,6.77,150,6.22,180,5.72
20,40.1,5.190076,52,5.81,60,6.17,75,6.86,90,7.35,110,8.76,120,9.74,135,8.34,150,7.32,180,6.56

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	3.74	3.98	4.16	4.35	4.39	4.23	3.72	3.21
8	4.48	4.73	4.93	5.19	5.22	5.11	4.64	4.1
10	4.96	5.18	5.35	5.64	5.68	5.58	5.33	4.87
12	5.27	5.44	5.66	6.09	6.19	6.06	5.74	5.4
14	5.47	5.67	5.95	6.49	6.79	6.62	6.22	5.78
16	5.66	5.94	6.27	6.7	7.48	7.32	6.77	6.22
20	5.81	6.17	6.86	7.35	8.76	9.74	8.34	7.32

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.6°	2.41	149°	2.78
8	43.9°	2.92	153°	3.56
10	41.6°	3.33	156°	4.24
12	40.9°	3.61	180°	4.93
14	40.5°	3.8	180°	5.37
16	39.9°	3.93	180°	5.72
20	40.1°	3.97	180°	6.56

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°	3.74	4.48	4.96	5.27	5.47	5.66	5.81
60°	3.98	4.73	5.18	5.44	5.67	5.94	6.17
75°	4.16	4.93	5.35	5.66	5.95	6.27	6.86
90°	4.35	5.19	5.64	6.09	6.49	6.70	7.35
110°	4.39	5.22	5.68	6.19	6.79	7.48	8.76
120°	4.23	5.11	5.58	6.06	6.62	7.32	9.74
135°	3.72	4.64	5.33	5.74	6.22	6.77	8.34
150°	3.21	4.10	4.87	5.40	5.78	6.22	7.32