INFERNO: ORC Rating

GPH

531.8

OSN

519.6

LOA

12.415 m

Displacement

5125 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7982

Medium

1.0235

High

1.1597

Triple Offshore

Low

1.0204

Medium

1.2538

High

1.3992

Boat Specifications

Dimensions

Length overall: 12.415 m
Beam: 3.96 m
Draft: 2.6 m
Displacement: 5125 kg
Crew weight: 760 kg
Wetted surface: 29.85 m²

Sails

Mainsail: 64.59 m²
Genoa: 41.49 m²
Spinnaker: 153.36 m²
Asymmetric spinnaker: 0 m²

Design

Type: FARR 40 OD
Builder: CARROLL
Designer: FARR
Year built: 1997
Stability index: 123.2

Performance data

Polar CSV

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

6,42.3,5.894831,52,6.57,60,6.89,75,7.12,90,7.01,110,6.78,120,6.62,135,5.99,142.4,5.503038,150,5.04
8,39.4,6.664652,52,7.46,60,7.7,75,7.88,90,7.85,110,7.86,120,7.81,135,7.36,143.8,6.790916,150,6.33
10,37.8,6.935348,52,7.77,60,8.01,75,8.29,90,8.36,110,8.4,120,8.49,135,8.17,150,7.39,150.5,7.353315
12,37,7.074566,52,7.94,60,8.19,75,8.56,90,8.8,110,8.78,120,9.07,135,8.87,150,8.14,156.5,7.796654
14,37.2,7.218812,52,8.04,60,8.31,75,8.75,90,9.15,110,9.13,120,9.51,135,9.64,150,8.79,161.9,8.153468
16,37.2,7.294139,52,8.11,60,8.4,75,8.9,90,9.4,110,9.54,120,9.96,135,10.52,150,9.53,160.4,8.842348
20,37.5,7.335949,52,8.17,60,8.5,75,9.1,90,9.78,110,10.61,120,10.86,135,12.17,148.7,11.668204,150,11.51

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.57	6.89	7.12	7.01	6.78	6.62	5.99	5.04
8	7.46	7.7	7.88	7.85	7.86	7.81	7.36	6.33
10	7.77	8.01	8.29	8.36	8.4	8.49	8.17	7.39
12	7.94	8.19	8.56	8.8	8.78	9.07	8.87	8.14
14	8.04	8.31	8.75	9.15	9.13	9.51	9.64	8.79
16	8.11	8.4	8.9	9.4	9.54	9.96	10.52	9.53
20	8.17	8.5	9.1	9.78	10.61	10.86	12.17	11.51

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.3°	4.36	142.4°	4.36
8	39.4°	5.15	143.8°	5.48
10	37.8°	5.48	150.5°	6.4
12	37°	5.65	156.5°	7.15
14	37.2°	5.75	161.9°	7.75
16	37.2°	5.81	160.4°	8.33
20	37.5°	5.82	148.7°	9.97

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°	6.57	7.46	7.77	7.94	8.04	8.11	8.17
60°	6.89	7.70	8.01	8.19	8.31	8.40	8.50
75°	7.12	7.88	8.29	8.56	8.75	8.90	9.10
90°	7.01	7.85	8.36	8.80	9.15	9.40	9.78
110°	6.78	7.86	8.40	8.78	9.13	9.54	10.61
120°	6.62	7.81	8.49	9.07	9.51	9.96	10.86
135°	5.99	7.36	8.17	8.87	9.64	10.52	12.17
150°	5.04	6.33	7.39	8.14	8.79	9.53	11.51