GEORGIA ALEXANDRA: ORC Rating

GPH

726.2

OSN

706.6

LOA

10.68 m

Displacement

5600 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6135

Medium

0.8366

High

0.9844

Triple Offshore

Low

0.8007

Medium

1.0542

High

1.1919

Boat Specifications

Dimensions

Length overall: 10.68 m
Beam: 3.15 m
Draft: 1.58 m
Displacement: 5600 kg
Crew weight: 450 kg
Wetted surface: 27.22 m²

Sails

Mainsail: 24.31 m²
Genoa: 34.49 m²
Spinnaker: 70.59 m²
Asymmetric spinnaker: 0 m²

Design

Type: GHALLENGER 35
Builder: Trident Marine
Designer: Primrose
Year built: 1978

Performance data

Polar CSV

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

6,45.9,4.066601,52,4.46,60,4.81,75,5.14,90,5.11,110,4.7,120,4.58,135,4.16,147.7,3.655672,150,3.56
8,44.6,4.81724,52,5.33,60,5.73,75,6.09,90,6.05,110,5.76,120,5.63,135,5.16,150,4.55,150.9,4.509184
10,44.2,5.31447,52,5.92,60,6.3,75,6.58,90,6.61,110,6.55,120,6.46,135,6.07,150,5.39,152.5,5.276148
12,42.9,5.555989,52,6.22,60,6.53,75,6.79,90,6.89,110,6.93,120,6.89,135,6.65,150,6.17,155.1,5.931355
14,43.2,5.857591,52,6.41,60,6.64,75,6.91,90,7.09,110,7.21,120,7.19,135,6.99,150,6.67,172.3,6.054593
16,42.7,5.946269,52,6.51,60,6.74,75,6.99,90,7.25,110,7.44,120,7.49,135,7.29,150,6.98,180,6.53
20,42.9,6.020125,52,6.57,60,6.81,75,7.14,90,7.46,110,7.83,120,8,135,7.96,150,7.56,180,7.14

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.46	4.81	5.14	5.11	4.7	4.58	4.16	3.56
8	5.33	5.73	6.09	6.05	5.76	5.63	5.16	4.55
10	5.92	6.3	6.58	6.61	6.55	6.46	6.07	5.39
12	6.22	6.53	6.79	6.89	6.93	6.89	6.65	6.17
14	6.41	6.64	6.91	7.09	7.21	7.19	6.99	6.67
16	6.51	6.74	6.99	7.25	7.44	7.49	7.29	6.98
20	6.57	6.81	7.14	7.46	7.83	8	7.96	7.56

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	45.9°	2.83	147.7°	3.09
8	44.6°	3.43	150.9°	3.94
10	44.2°	3.81	152.5°	4.68
12	42.9°	4.07	155.1°	5.38
14	43.2°	4.27	172.3°	6
16	42.7°	4.37	180°	6.53
20	42.9°	4.41	180°	7.14

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°	4.46	5.33	5.92	6.22	6.41	6.51	6.57
60°	4.81	5.73	6.30	6.53	6.64	6.74	6.81
75°	5.14	6.09	6.58	6.79	6.91	6.99	7.14
90°	5.11	6.05	6.61	6.89	7.09	7.25	7.46
110°	4.70	5.76	6.55	6.93	7.21	7.44	7.83
120°	4.58	5.63	6.46	6.89	7.19	7.49	8.00
135°	4.16	5.16	6.07	6.65	6.99	7.29	7.96
150°	3.56	4.55	5.39	6.17	6.67	6.98	7.56