MADNESS: ORC Rating

GPH

710.2

OSN

690.3

LOA

7.276 m

Displacement

940 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5947

Medium

0.7791

High

0.8792

Triple Offshore

Low

0.7559

Medium

0.9428

High

1.0583

Boat Specifications

Dimensions

Length overall: 7.276 m
Beam: 2.48 m
Draft: 1.44 m
Displacement: 940 kg
Crew weight: 400 kg
Wetted surface: 10.07 m²

Sails

Mainsail: 15.87 m²
Genoa: 13.81 m²
Spinnaker: 30.2 m²
Asymmetric spinnaker: 44.51 m²

Design

Type: proto
Builder: Cantieri Petronio Trieste
Designer: Starkel
Year built: 1981

Performance data

Polar CSV

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

6,41.8,4.265731,52,4.75,60,4.95,75,5.04,90,5.14,110,5.18,120,4.98,135,4.48,145.1,4.035838,150,3.82
8,39.9,4.953301,52,5.47,60,5.6,75,5.66,90,5.86,110,5.92,120,5.82,135,5.43,149.4,4.809803,150,4.78
10,37.5,5.281379,52,5.81,60,5.93,75,6.03,90,6.23,110,6.4,120,6.31,135,6.04,150,5.53,156.3,5.263948
12,36.4,5.40444,52,5.98,60,6.13,75,6.3,90,6.44,110,6.81,120,6.8,135,6.48,150,6.06,166.7,5.589928
14,36.4,5.454136,52,6.05,60,6.23,75,6.5,90,6.63,110,7.19,120,7.33,135,6.96,150,6.47,177.1,5.917578
16,36.6,5.493154,52,6.1,60,6.29,75,6.62,90,6.88,110,7.52,120,7.94,135,7.57,150,6.89,177.5,6.295992
20,37.6,5.528281,52,6.15,60,6.38,75,6.79,90,7.24,110,8.27,120,9.58,135,10.52,137.4,10.243214,150,8.71
24,39.9,5.526841,52,6.12,60,6.39,75,6.88,90,7.52,110,9.27,120,10.92,135,13.15,143,12.934561,150,11.93

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.75	4.95	5.04	5.14	5.18	4.98	4.48	3.82
8	5.47	5.6	5.66	5.86	5.92	5.82	5.43	4.78
10	5.81	5.93	6.03	6.23	6.4	6.31	6.04	5.53
12	5.98	6.13	6.3	6.44	6.81	6.8	6.48	6.06
14	6.05	6.23	6.5	6.63	7.19	7.33	6.96	6.47
16	6.1	6.29	6.62	6.88	7.52	7.94	7.57	6.89
20	6.15	6.38	6.79	7.24	8.27	9.58	10.52	8.71
24	6.12	6.39	6.88	7.52	9.27	10.92	13.15	11.93

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.8°	3.18	145.1°	3.31
8	39.9°	3.8	149.4°	4.14
10	37.5°	4.19	156.3°	4.82
12	36.4°	4.35	166.7°	5.44
14	36.4°	4.39	177.1°	5.91
16	36.6°	4.41	177.5°	6.29
20	37.6°	4.38	137.4°	7.54
24	39.9°	4.24	143°	10.33

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 kt24 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)	Boat speed in 24 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	4.75	5.47	5.81	5.98	6.05	6.10	6.15	6.12
60°	4.95	5.60	5.93	6.13	6.23	6.29	6.38	6.39
75°	5.04	5.66	6.03	6.30	6.50	6.62	6.79	6.88
90°	5.14	5.86	6.23	6.44	6.63	6.88	7.24	7.52
110°	5.18	5.92	6.40	6.81	7.19	7.52	8.27	9.27
120°	4.98	5.82	6.31	6.80	7.33	7.94	9.58	10.92
135°	4.48	5.43	6.04	6.48	6.96	7.57	10.52	13.15
150°	3.82	4.78	5.53	6.06	6.47	6.89	8.71	11.93