PITHEAS: ORC Rating

GPH

769.1

OSN

743.7

LOA

9.1 m

Displacement

4053 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5784

Medium

0.802

High

0.9537

Triple Offshore

Low

0.747

Medium

0.9989

High

1.1411

Boat Specifications

Dimensions

Length overall: 9.1 m
Beam: 3.06 m
Draft: 1.61 m
Displacement: 4053 kg
Crew weight: 450 kg
Wetted surface: 19.24 m²

Sails

Mainsail: 16.3 m²
Genoa: 27.3 m²
Spinnaker: 63.5 m²
Asymmetric spinnaker: 0 m²

Design

Type: CARTER 30
Designer: R.CARTER
Year built: 1974

Performance data

Polar CSV

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

6,44.7,3.643784,52,4.02,60,4.28,75,4.46,90,4.47,110,4.6,120,4.47,135,4.05,147.7,3.572857,150,3.49
8,42.7,4.272605,52,4.8,60,5.08,75,5.29,90,5.43,110,5.61,120,5.48,135,5.01,150,4.42,151.6,4.354011
10,42.5,4.828576,52,5.41,60,5.71,75,5.91,90,6.11,110,6.24,120,6.18,135,5.87,150,5.23,151.7,5.156294
12,42.6,5.311799,52,5.86,60,6.07,75,6.23,90,6.42,110,6.57,120,6.53,135,6.33,150,5.95,157.3,5.647463
14,41.6,5.576372,52,6.1,60,6.28,75,6.43,90,6.55,110,6.85,120,6.82,135,6.63,150,6.34,180,5.81
16,41,5.684306,52,6.23,60,6.4,75,6.59,90,6.65,110,7.1,120,7.13,135,6.93,150,6.62,180,6.24
20,41.2,5.701641,52,6.27,60,6.48,75,6.82,90,7,110,7.37,120,7.62,135,7.54,150,7.18,180,6.78

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.02	4.28	4.46	4.47	4.6	4.47	4.05	3.49
8	4.8	5.08	5.29	5.43	5.61	5.48	5.01	4.42
10	5.41	5.71	5.91	6.11	6.24	6.18	5.87	5.23
12	5.86	6.07	6.23	6.42	6.57	6.53	6.33	5.95
14	6.1	6.28	6.43	6.55	6.85	6.82	6.63	6.34
16	6.23	6.4	6.59	6.65	7.1	7.13	6.93	6.62
20	6.27	6.48	6.82	7	7.37	7.62	7.54	7.18

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.7°	2.59	147.7°	3.02
8	42.7°	3.14	151.6°	3.83
10	42.5°	3.56	151.7°	4.54
12	42.6°	3.91	157.3°	5.21
14	41.6°	4.17	180°	5.81
16	41°	4.29	180°	6.24
20	41.2°	4.29	180°	6.78

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°	4.02	4.80	5.41	5.86	6.10	6.23	6.27
60°	4.28	5.08	5.71	6.07	6.28	6.40	6.48
75°	4.46	5.29	5.91	6.23	6.43	6.59	6.82
90°	4.47	5.43	6.11	6.42	6.55	6.65	7.00
110°	4.60	5.61	6.24	6.57	6.85	7.10	7.37
120°	4.47	5.48	6.18	6.53	6.82	7.13	7.62
135°	4.05	5.01	5.87	6.33	6.63	6.93	7.54
150°	3.49	4.42	5.23	5.95	6.34	6.62	7.18