NAVAHO: ORC Rating

GPH

647.9

OSN

630

LOA

10.38 m

Displacement

4415 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6241

Medium

0.8518

High

0.979

Triple Offshore

Low

0.8081

Medium

1.0459

High

1.1687

Boat Specifications

Dimensions

Length overall: 10.38 m
Beam: 3.22 m
Draft: 1.82 m
Displacement: 4415 kg
Crew weight: 500 kg
Wetted surface: 23.79 m²

Sails

Mainsail: 34.43 m²
Genoa: 30.36 m²
Spinnaker: 73.09 m²
Asymmetric spinnaker: 61.71 m²

Design

Type: FARR 1020
Designer: FARR
Year built: 1985

Performance data

Polar CSV

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

6,42.8,4.497568,52,5.05,60,5.36,75,5.62,90,5.57,110,5.48,120,5.32,135,4.82,145.5,4.234788,150,4.03
8,41.6,5.30892,52,5.99,60,6.29,75,6.5,90,6.5,110,6.58,120,6.45,135,5.91,150,5.080682
10,41.2,6.007324,52,6.6,60,6.78,75,6.93,90,7.02,110,7.11,120,7.04,135,6.73,150,6.027537
12,39.8,6.26071,52,6.86,60,7.03,75,7.19,90,7.33,110,7.49,120,7.43,135,7.17,150,6.76,158.5,6.405726
14,38.6,6.321012,52,6.96,60,7.15,75,7.39,90,7.5,110,7.85,120,7.83,135,7.54,150,7.16,180,6.58
16,38.6,6.397785,52,7.02,60,7.21,75,7.54,90,7.76,110,8.18,120,8.25,135,7.96,150,7.51,180,7.03
20,38.8,6.428533,52,7.04,60,7.26,75,7.66,90,8.14,110,8.61,120,9.01,135,8.89,150,8.31,180,7.72

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.05	5.36	5.62	5.57	5.48	5.32	4.82	4.03
8	5.99	6.29	6.5	6.5	6.58	6.45	5.91	5.08
10	6.6	6.78	6.93	7.02	7.11	7.04	6.73	6.03
12	6.86	7.03	7.19	7.33	7.49	7.43	7.17	6.76
14	6.96	7.15	7.39	7.5	7.85	7.83	7.54	7.16
16	7.02	7.21	7.54	7.76	8.18	8.25	7.96	7.51
20	7.04	7.26	7.66	8.14	8.61	9.01	8.89	8.31

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.3	145.5°	3.49
8	41.6°	3.97	150°	4.4
10	41.2°	4.52	150°	5.22
12	39.8°	4.81	158.5°	5.96
14	38.6°	4.94	180°	6.58
16	38.6°	5	180°	7.03
20	38.8°	5.01	180°	7.72

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°	5.05	5.99	6.60	6.86	6.96	7.02	7.04
60°	5.36	6.29	6.78	7.03	7.15	7.21	7.26
75°	5.62	6.50	6.93	7.19	7.39	7.54	7.66
90°	5.57	6.50	7.02	7.33	7.50	7.76	8.14
110°	5.48	6.58	7.11	7.49	7.85	8.18	8.61
120°	5.32	6.45	7.04	7.43	7.83	8.25	9.01
135°	4.82	5.91	6.73	7.17	7.54	7.96	8.89
150°	4.03	5.08	6.03	6.76	7.16	7.51	8.31