SPITFIRE: ORC Rating

GPH

580.6

OSN

567.5

LOA

12.001 m

Displacement

5585 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7179

Medium

0.9456

High

1.0832

Triple Offshore

Low

0.9247

Medium

1.1538

High

1.288

Boat Specifications

Dimensions

Length overall: 12.001 m
Beam: 3.92 m
Draft: 2.15 m
Displacement: 5585 kg
Crew weight: 1043 kg
Wetted surface: 27.25 m²

Sails

Mainsail: 54.87 m²
Genoa: 49.33 m²
Spinnaker: 90.56 m²
Asymmetric spinnaker: 0 m²

Design

Type: Unknown
Builder: FRANKLIN
Designer: G&S
Year built: 1987

Performance data

Polar CSV

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

6,41.2,5.369378,52,6.1,60,6.44,75,6.7,90,6.64,110,6.02,120,5.8,135,5.21,144.5,4.679926,150,4.4
8,40.5,6.35187,52,7.01,60,7.18,75,7.32,90,7.32,110,7.13,120,6.96,135,6.38,149,5.50651,150,5.45
10,37.9,6.653283,52,7.34,60,7.51,75,7.68,90,7.71,110,7.66,120,7.54,135,7.17,150,6.44,151,6.391349
12,36.8,6.818766,52,7.49,60,7.7,75,7.98,90,8.08,110,8.14,120,8.02,135,7.64,150,7.17,158.5,6.792649
14,35.8,6.879853,52,7.6,60,7.83,75,8.18,90,8.4,110,8.56,120,8.5,135,8.1,150,7.61,180,6.98
16,35.4,6.906892,52,7.67,60,7.92,75,8.32,90,8.65,110,8.91,120,8.94,135,8.57,150,8.04,180,7.46
20,34.9,7.035282,52,7.82,60,8.03,75,8.49,90,8.96,110,9.4,120,9.84,135,9.59,150,8.92,180,8.29

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.1	6.44	6.7	6.64	6.02	5.8	5.21	4.4
8	7.01	7.18	7.32	7.32	7.13	6.96	6.38	5.45
10	7.34	7.51	7.68	7.71	7.66	7.54	7.17	6.44
12	7.49	7.7	7.98	8.08	8.14	8.02	7.64	7.17
14	7.6	7.83	8.18	8.4	8.56	8.5	8.1	7.61
16	7.67	7.92	8.32	8.65	8.91	8.94	8.57	8.04
20	7.82	8.03	8.49	8.96	9.4	9.84	9.59	8.92

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.2°	4.04	144.5°	3.81
8	40.5°	4.83	149°	4.72
10	37.9°	5.25	151°	5.59
12	36.8°	5.46	158.5°	6.32
14	35.8°	5.58	180°	6.98
16	35.4°	5.63	180°	7.46
20	34.9°	5.77	180°	8.29

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°	6.10	7.01	7.34	7.49	7.60	7.67	7.82
60°	6.44	7.18	7.51	7.70	7.83	7.92	8.03
75°	6.70	7.32	7.68	7.98	8.18	8.32	8.49
90°	6.64	7.32	7.71	8.08	8.40	8.65	8.96
110°	6.02	7.13	7.66	8.14	8.56	8.91	9.40
120°	5.80	6.96	7.54	8.02	8.50	8.94	9.84
135°	5.21	6.38	7.17	7.64	8.10	8.57	9.59
150°	4.40	5.45	6.44	7.17	7.61	8.04	8.92