IFje: ORC Rating

GPH

819.4

OSN

792

LOA

7.87 m

Displacement

2342 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.4956

Medium

0.6769

High

0.7881

Triple Offshore

Low

0.6345

Medium

0.8286

High

0.9336

Boat Specifications

Dimensions

Length overall: 7.87 m
Beam: 2.2 m
Draft: 1.2 m
Displacement: 2342 kg
Crew weight: 275 kg
Wetted surface: 15.82 m²

Sails

Mainsail: 16.93 m²
Genoa: 14.56 m²
Spinnaker: 27.79 m²
Asymmetric spinnaker: 0 m²

Design

Type: IF
Builder: Marieholm
Designer: Tord Sunden
Year built: 1974

Performance data

Polar CSV

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

6,43.8,3.588449,52,3.96,60,4.16,75,4.28,90,4.29,110,4.3,120,4.15,135,3.73,148.6,3.280414,150,3.23
8,42,4.184918,52,4.65,60,4.85,75,5,90,5.11,110,5.14,120,5,135,4.59,150,4.1,153.7,3.982213
10,40.8,4.610334,52,5.12,60,5.3,75,5.45,90,5.62,110,5.66,120,5.57,135,5.26,150,4.82,159.1,4.527917
12,40,4.921385,52,5.44,60,5.59,75,5.73,90,5.92,110,5.98,120,5.9,135,5.7,150,5.38,170.4,4.8986
14,39.8,5.115299,52,5.62,60,5.77,75,5.93,90,6.11,110,6.25,120,6.17,135,6,150,5.75,177.7,5.334297
16,39.7,5.211856,52,5.72,60,5.88,75,6.07,90,6.21,110,6.48,120,6.44,135,6.26,150,6.02,179,5.700868
20,40,5.273845,52,5.78,60,5.95,75,6.23,90,6.44,110,6.84,120,6.91,135,6.79,150,6.53,179.4,6.220341
24,41.2,5.302925,52,5.78,60,5.98,75,6.31,90,6.62,110,7.06,120,7.41,135,7.34,150,7.03,179.4,6.690367

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	3.96	4.16	4.28	4.29	4.3	4.15	3.73	3.23
8	4.65	4.85	5	5.11	5.14	5	4.59	4.1
10	5.12	5.3	5.45	5.62	5.66	5.57	5.26	4.82
12	5.44	5.59	5.73	5.92	5.98	5.9	5.7	5.38
14	5.62	5.77	5.93	6.11	6.25	6.17	6	5.75
16	5.72	5.88	6.07	6.21	6.48	6.44	6.26	6.02
20	5.78	5.95	6.23	6.44	6.84	6.91	6.79	6.53
24	5.78	5.98	6.31	6.62	7.06	7.41	7.34	7.03

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.8°	2.59	148.6°	2.8
8	42°	3.11	153.7°	3.57
10	40.8°	3.49	159.1°	4.23
12	40°	3.77	170.4°	4.83
14	39.8°	3.93	177.7°	5.33
16	39.7°	4.01	179°	5.7
20	40°	4.04	179.4°	6.22
24	41.2°	3.99	179.4°	6.69

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°	3.96	4.65	5.12	5.44	5.62	5.72	5.78	5.78
60°	4.16	4.85	5.30	5.59	5.77	5.88	5.95	5.98
75°	4.28	5.00	5.45	5.73	5.93	6.07	6.23	6.31
90°	4.29	5.11	5.62	5.92	6.11	6.21	6.44	6.62
110°	4.30	5.14	5.66	5.98	6.25	6.48	6.84	7.06
120°	4.15	5.00	5.57	5.90	6.17	6.44	6.91	7.41
135°	3.73	4.59	5.26	5.70	6.00	6.26	6.79	7.34
150°	3.23	4.10	4.82	5.38	5.75	6.02	6.53	7.03