WINDROSE: ORC Rating

GPH

757.7

OSN

732.4

LOA

8.212 m

Displacement

2070 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5204

Medium

0.7246

High

0.8455

Triple Offshore

Low

0.6752

Medium

0.9012

High

1.0264

Boat Specifications

Dimensions

Length overall: 8.212 m
Beam: 2.78 m
Draft: 1.32 m
Displacement: 2070 kg
Crew weight: 375 kg
Wetted surface: 15.7 m²

Sails

Mainsail: 14.96 m²
Genoa: 18.52 m²
Spinnaker: 41.68 m²
Asymmetric spinnaker: 0 m²

Design

Type: Bavaria 820x1.30
Builder: Bavaria Yachts
Designer: Mohnhaupt
Year built: 1985
Stability index: 102.5

Performance data

Polar CSV

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

6,44.8,3.692373,52,4.08,60,4.37,75,4.59,90,4.61,110,4.71,120,4.57,135,4.09,147.8,3.59256,150,3.51
8,43.5,4.411515,52,4.9,60,5.22,75,5.45,90,5.62,110,5.73,120,5.59,135,5.08,150,4.49,151.4,4.43061
10,43.2,4.96592,52,5.49,60,5.8,75,6,90,6.22,110,6.3,120,6.22,135,5.9,150,5.34,153.3,5.182615
12,42.7,5.388381,52,5.92,60,6.13,75,6.3,90,6.56,110,6.69,120,6.61,135,6.36,150,6.01,159.5,5.690358
14,42.3,5.692027,52,6.17,60,6.35,75,6.53,90,6.77,110,7.1,120,7,135,6.72,150,6.4,173.6,5.916874
16,42.3,5.759628,52,6.26,60,6.48,75,6.76,90,6.9,110,7.48,120,7.41,135,7.12,150,6.74,178.1,6.283455
20,44.2,5.774779,52,6.22,60,6.49,75,6.98,90,7.35,110,7.94,120,8.33,135,7.99,150,7.49,177.2,6.948295

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.08	4.37	4.59	4.61	4.71	4.57	4.09	3.51
8	4.9	5.22	5.45	5.62	5.73	5.59	5.08	4.49
10	5.49	5.8	6	6.22	6.3	6.22	5.9	5.34
12	5.92	6.13	6.3	6.56	6.69	6.61	6.36	6.01
14	6.17	6.35	6.53	6.77	7.1	7	6.72	6.4
16	6.26	6.48	6.76	6.9	7.48	7.41	7.12	6.74
20	6.22	6.49	6.98	7.35	7.94	8.33	7.99	7.49

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.8°	2.62	147.8°	3.04
8	43.5°	3.2	151.4°	3.89
10	43.2°	3.62	153.3°	4.63
12	42.7°	3.96	159.5°	5.33
14	42.3°	4.21	173.6°	5.88
16	42.3°	4.26	178.1°	6.28
20	44.2°	4.14	177.2°	6.94

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°	4.08	4.90	5.49	5.92	6.17	6.26	6.22
60°	4.37	5.22	5.80	6.13	6.35	6.48	6.49
75°	4.59	5.45	6.00	6.30	6.53	6.76	6.98
90°	4.61	5.62	6.22	6.56	6.77	6.90	7.35
110°	4.71	5.73	6.30	6.69	7.10	7.48	7.94
120°	4.57	5.59	6.22	6.61	7.00	7.41	8.33
135°	4.09	5.08	5.90	6.36	6.72	7.12	7.99
150°	3.51	4.49	5.34	6.01	6.40	6.74	7.49