Nord Burgas: ORC Rating

GPH

751.5

OSN

727.8

LOA

7.65 m

Displacement

1910 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5451

Medium

0.7426

High

0.853

Triple Offshore

Low

0.699

Medium

0.9002

High

1.0065

Boat Specifications

Dimensions

Length overall: 7.65 m
Beam: 2.76 m
Draft: 1.56 m
Displacement: 1910 kg
Crew weight: 410 kg
Wetted surface: 13.26 m²

Sails

Mainsail: 18.77 m²
Genoa: 16.88 m²
Spinnaker: 34.14 m²
Asymmetric spinnaker: 0 m²

Design

Type: Conrad 25RT
Builder: Gdansk, Poland
Designer: Peterson
Year built: 1976
Stability index: 103.4

Performance data

Polar CSV

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

6,41.8,3.930375,52,4.42,60,4.64,75,4.8,90,4.74,110,4.7,120,4.53,135,4.06,148.7,3.534401,150,3.48
8,41.2,4.625108,52,5.22,60,5.43,75,5.55,90,5.6,110,5.6,120,5.46,135,4.96,150,4.38,153.8,4.246269
10,40.6,5.162845,52,5.66,60,5.79,75,5.89,90,6.02,110,6.02,120,5.94,135,5.69,150,5.19,154.7,4.988483
12,38.2,5.382659,52,5.88,60,6,75,6.12,90,6.3,110,6.35,120,6.26,135,6.05,150,5.76,165.8,5.353577
14,37.5,5.49566,52,6.01,60,6.16,75,6.32,90,6.55,110,6.68,120,6.59,135,6.35,150,6.08,178.4,5.702223
16,37.2,5.536515,52,6.08,60,6.26,75,6.51,90,6.7,110,7,120,6.93,135,6.68,150,6.38,179,6.020917
20,37.8,5.568528,52,6.11,60,6.33,75,6.72,90,7.02,110,7.45,120,7.54,135,7.33,150,6.99,179,6.581002

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.42	4.64	4.8	4.74	4.7	4.53	4.06	3.48
8	5.22	5.43	5.55	5.6	5.6	5.46	4.96	4.38
10	5.66	5.79	5.89	6.02	6.02	5.94	5.69	5.19
12	5.88	6	6.12	6.3	6.35	6.26	6.05	5.76
14	6.01	6.16	6.32	6.55	6.68	6.59	6.35	6.08
16	6.08	6.26	6.51	6.7	7	6.93	6.68	6.38
20	6.11	6.33	6.72	7.02	7.45	7.54	7.33	6.99

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.8°	2.93	148.7°	3.02
8	41.2°	3.48	153.8°	3.81
10	40.6°	3.92	154.7°	4.51
12	38.2°	4.23	165.8°	5.19
14	37.5°	4.36	178.4°	5.7
16	37.2°	4.41	179°	6.02
20	37.8°	4.4	179°	6.58

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°	4.42	5.22	5.66	5.88	6.01	6.08	6.11
60°	4.64	5.43	5.79	6.00	6.16	6.26	6.33
75°	4.80	5.55	5.89	6.12	6.32	6.51	6.72
90°	4.74	5.60	6.02	6.30	6.55	6.70	7.02
110°	4.70	5.60	6.02	6.35	6.68	7.00	7.45
120°	4.53	5.46	5.94	6.26	6.59	6.93	7.54
135°	4.06	4.96	5.69	6.05	6.35	6.68	7.33
150°	3.48	4.38	5.19	5.76	6.08	6.38	6.99