Brunhildur : ORC Rating

GPH

692.5

OSN

673.6

LOA

7.93 m

Displacement

1610 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.595

Medium

0.7956

High

0.8934

Triple Offshore

Low

0.7651

Medium

0.9737

High

1.0863

Boat Specifications

Dimensions

Length overall: 7.93 m
Beam: 2.86 m
Draft: 1.37 m
Displacement: 1610 kg
Crew weight: 363 kg
Wetted surface: 13.83 m²

Sails

Mainsail: 21.33 m²
Genoa: 17.87 m²
Spinnaker: 47.57 m²
Asymmetric spinnaker: 46.06 m²

Design

Type: X-79
Builder: Nordsoe verft
Designer: Niels Jeppesen
Year built: 1979

Performance data

Polar CSV

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

6,42.8,4.279504,52,4.76,60,5.02,75,5.21,90,5.27,110,5.26,120,5.06,135,4.53,146.5,4.017337,150,3.86
8,42,5.086492,52,5.64,60,5.83,75,5.97,90,6.1,110,6.12,120,5.99,135,5.58,147.8,4.963406,150,4.85
10,40.1,5.556126,52,6.07,60,6.22,75,6.34,90,6.54,110,6.62,120,6.51,135,6.22,150,5.67,153,5.533068
12,39,5.687477,52,6.25,60,6.44,75,6.66,90,6.83,110,7.11,120,7.01,135,6.68,150,6.26,170,5.727006
14,39,5.751815,52,6.31,60,6.54,75,6.91,90,7.06,110,7.56,120,7.52,135,7.15,150,6.69,180,6.17
16,39,5.751815,52,6.34,60,6.59,75,7.03,90,7.35,110,7.89,120,8.09,135,7.65,150,7.12,180,6.56
20,40.5,5.812685,52,6.35,60,6.61,75,7.1,90,7.66,110,8.51,120,9.35,135,9.28,150,8.15,180,7.39

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.76	5.02	5.21	5.27	5.26	5.06	4.53	3.86
8	5.64	5.83	5.97	6.1	6.12	5.99	5.58	4.85
10	6.07	6.22	6.34	6.54	6.62	6.51	6.22	5.67
12	6.25	6.44	6.66	6.83	7.11	7.01	6.68	6.26
14	6.31	6.54	6.91	7.06	7.56	7.52	7.15	6.69
16	6.34	6.59	7.03	7.35	7.89	8.09	7.65	7.12
20	6.35	6.61	7.1	7.66	8.51	9.35	9.28	8.15

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.14	146.5°	3.35
8	42°	3.78	147.8°	4.2
10	40.1°	4.25	153°	4.93
12	39°	4.42	170°	5.64
14	39°	4.47	180°	6.17
16	39°	4.47	180°	6.56
20	40.5°	4.42	180°	7.39

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°	4.76	5.64	6.07	6.25	6.31	6.34	6.35
60°	5.02	5.83	6.22	6.44	6.54	6.59	6.61
75°	5.21	5.97	6.34	6.66	6.91	7.03	7.10
90°	5.27	6.10	6.54	6.83	7.06	7.35	7.66
110°	5.26	6.12	6.62	7.11	7.56	7.89	8.51
120°	5.06	5.99	6.51	7.01	7.52	8.09	9.35
135°	4.53	5.58	6.22	6.68	7.15	7.65	9.28
150°	3.86	4.85	5.67	6.26	6.69	7.12	8.15