HRUBY: ORC Rating

GPH

767.7

OSN

742.2

LOA

8.25 m

Displacement

2698 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5356

Medium

0.7267

High

0.8284

Triple Offshore

Low

0.6842

Medium

0.8834

High

0.9763

Boat Specifications

Dimensions

Length overall: 8.25 m
Beam: 2.82 m
Draft: 1.76 m
Displacement: 2698 kg
Crew weight: 280 kg
Wetted surface: 15.23 m²

Sails

Mainsail: 13.83 m²
Genoa: 20.06 m²
Spinnaker: 46.72 m²
Asymmetric spinnaker: 0 m²

Design

Type: GRANADA 27
Builder: GESTEN GLASFIBER
Designer: ELVSTROEM/KJAERULF
Year built: 1976

Performance data

Polar CSV

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

6,42.9,3.795,52,4.21,60,4.42,75,4.54,90,4.55,110,4.65,120,4.51,135,4.09,146.8,3.633042,150,3.51
8,40.8,4.451812,52,4.98,60,5.19,75,5.34,90,5.44,110,5.57,120,5.46,135,5.04,150,4.46,150.7,4.437721
10,39.7,4.899925,52,5.47,60,5.63,75,5.77,90,5.88,110,6.03,120,5.98,135,5.73,150,5.26,153.7,5.097679
12,39,5.185641,52,5.72,60,5.87,75,6.01,90,6.1,110,6.32,120,6.3,135,6.12,150,5.8,162.1,5.443496
14,38.5,5.302781,52,5.85,60,6,75,6.17,90,6.23,110,6.54,120,6.57,135,6.42,150,6.15,175.8,5.695295
16,38.2,5.344485,52,5.9,60,6.07,75,6.29,90,6.4,110,6.71,120,6.81,135,6.71,150,6.43,178.6,6.031801
20,38.7,5.368832,52,5.93,60,6.12,75,6.42,90,6.64,110,6.92,120,7.2,135,7.27,150,6.96,178.8,6.561439
24,40.1,5.333881,52,5.89,60,6.11,75,6.47,90,6.77,110,6.99,120,7.43,135,7.88,150,7.55,178.6,7.062108

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.21	4.42	4.54	4.55	4.65	4.51	4.09	3.51
8	4.98	5.19	5.34	5.44	5.57	5.46	5.04	4.46
10	5.47	5.63	5.77	5.88	6.03	5.98	5.73	5.26
12	5.72	5.87	6.01	6.1	6.32	6.3	6.12	5.8
14	5.85	6	6.17	6.23	6.54	6.57	6.42	6.15
16	5.9	6.07	6.29	6.4	6.71	6.81	6.71	6.43
20	5.93	6.12	6.42	6.64	6.92	7.2	7.27	6.96
24	5.89	6.11	6.47	6.77	6.99	7.43	7.88	7.55

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.9°	2.78	146.8°	3.04
8	40.8°	3.37	150.7°	3.87
10	39.7°	3.77	153.7°	4.57
12	39°	4.03	162.1°	5.18
14	38.5°	4.15	175.8°	5.68
16	38.2°	4.2	178.6°	6.03
20	38.7°	4.19	178.8°	6.56
24	40.1°	4.08	178.6°	7.06

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°	4.21	4.98	5.47	5.72	5.85	5.90	5.93	5.89
60°	4.42	5.19	5.63	5.87	6.00	6.07	6.12	6.11
75°	4.54	5.34	5.77	6.01	6.17	6.29	6.42	6.47
90°	4.55	5.44	5.88	6.10	6.23	6.40	6.64	6.77
110°	4.65	5.57	6.03	6.32	6.54	6.71	6.92	6.99
120°	4.51	5.46	5.98	6.30	6.57	6.81	7.20	7.43
135°	4.09	5.04	5.73	6.12	6.42	6.71	7.27	7.88
150°	3.51	4.46	5.26	5.80	6.15	6.43	6.96	7.55