INFERNO II: ORC Rating

GPH

635

OSN

618.4

LOA

9.498 m

Displacement

2528 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.723

Medium

0.9737

High

1.1056

Triple Offshore

Low

0.9348

Medium

1.1952

High

1.3459

Boat Specifications

Dimensions

Length overall: 9.498 m
Beam: 3.01 m
Draft: 1.53 m
Displacement: 2528 kg
Crew weight: 480 kg
Wetted surface: 18.2 m²

Sails

Mainsail: 31.87 m²
Genoa: 18.86 m²
Spinnaker: 66 m²
Asymmetric spinnaker: 63.36 m²

Design

Type: MATCHER 31
Builder: JENSEN/SKOVENBORG
Designer: JENSEN/SKOVENBORG
Year built: 1991

Performance data

Polar CSV

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

6,43.6,4.695018,52,5.17,60,5.45,75,5.66,90,5.78,110,5.76,120,5.57,135,4.98,139.3,4.748499,150,4.15
8,41.6,5.496136,52,6.13,60,6.35,75,6.5,90,6.69,110,6.7,120,6.56,135,6.1,149.3,5.245087,150,5.2
10,39.9,6.048241,52,6.63,60,6.78,75,6.9,90,7.14,110,7.23,120,7.1,135,6.78,150,6.15,151.3,6.087925
12,38.7,6.21452,52,6.83,60,7.03,75,7.26,90,7.44,110,7.79,120,7.67,135,7.27,150,6.8,160.4,6.422114
14,38.3,6.282044,52,6.92,60,7.16,75,7.56,90,7.71,110,8.32,120,8.29,135,7.8,150,7.25,180,6.64
16,38.3,6.320272,52,6.96,60,7.23,75,7.72,90,8.07,110,8.68,120,8.96,135,8.4,150,7.74,180,7.07
20,38.9,6.411878,52,7.07,60,7.37,75,7.85,90,8.53,110,9.36,120,10.13,135,10.17,150,8.9,180,7.99

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.17	5.45	5.66	5.78	5.76	5.57	4.98	4.15
8	6.13	6.35	6.5	6.69	6.7	6.56	6.1	5.2
10	6.63	6.78	6.9	7.14	7.23	7.1	6.78	6.15
12	6.83	7.03	7.26	7.44	7.79	7.67	7.27	6.8
14	6.92	7.16	7.56	7.71	8.32	8.29	7.8	7.25
16	6.96	7.23	7.72	8.07	8.68	8.96	8.4	7.74
20	7.07	7.37	7.85	8.53	9.36	10.13	10.17	8.9

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.6°	3.4	139.3°	3.6
8	41.6°	4.11	149.3°	4.51
10	39.9°	4.64	151.3°	5.34
12	38.7°	4.85	160.4°	6.05
14	38.3°	4.93	180°	6.64
16	38.3°	4.96	180°	7.07
20	38.9°	4.99	180°	7.99

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°	5.17	6.13	6.63	6.83	6.92	6.96	7.07
60°	5.45	6.35	6.78	7.03	7.16	7.23	7.37
75°	5.66	6.50	6.90	7.26	7.56	7.72	7.85
90°	5.78	6.69	7.14	7.44	7.71	8.07	8.53
110°	5.76	6.70	7.23	7.79	8.32	8.68	9.36
120°	5.57	6.56	7.10	7.67	8.29	8.96	10.13
135°	4.98	6.10	6.78	7.27	7.80	8.40	10.17
150°	4.15	5.20	6.15	6.80	7.25	7.74	8.90