SIR BISS: ORC Rating

GPH

576

OSN

561.5

LOA

11.795 m

Displacement

6154 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7113

Medium

0.9478

High

1.065

Triple Offshore

Low

0.9204

Medium

1.1718

High

1.2993

Boat Specifications

Dimensions

Length overall: 11.795 m
Beam: 3.71 m
Draft: 2.64 m
Displacement: 6154 kg
Crew weight: 730 kg
Wetted surface: 30.84 m²

Sails

Mainsail: 49.12 m²
Genoa: 39.97 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 127.5 m²

Design

Type: Sydney 39
Builder: Sydney Yachts
Designer: HB & D
Year built: 2000
Stability index: 113.1

Performance data

Polar CSV

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

6,42.6,5.080852,52,5.68,60,5.99,75,6.37,90,6.54,110,6.24,120,6.07,135,5.45,143.3,4.963982,150,4.6
8,41.1,6.037979,52,6.77,60,7.04,75,7.38,90,7.52,110,7.44,120,7.31,135,6.75,146.6,6.001093,150,5.79
10,39.6,6.6579,52,7.38,60,7.57,75,7.79,90,7.99,110,8.01,120,7.93,135,7.6,148.7,6.916659,150,6.83
12,38.2,6.82058,52,7.58,60,7.79,75,8.02,90,8.34,110,8.43,120,8.46,135,8.11,150,7.54,150.7,7.487937
14,37.8,6.910037,52,7.67,60,7.88,75,8.22,90,8.57,110,8.83,120,9.02,135,8.67,150,7.93,151.6,7.821305
16,37.6,6.992392,52,7.72,60,7.94,75,8.34,90,8.77,110,9.32,120,9.42,135,9.3,150,8.29,173,7.425347
20,37.8,7.150496,52,7.87,60,8.1,75,8.45,90,9.07,110,10.06,120,10.26,135,10.9,150,9.18,175.7,8.183034

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.68	5.99	6.37	6.54	6.24	6.07	5.45	4.6
8	6.77	7.04	7.38	7.52	7.44	7.31	6.75	5.79
10	7.38	7.57	7.79	7.99	8.01	7.93	7.6	6.83
12	7.58	7.79	8.02	8.34	8.43	8.46	8.11	7.54
14	7.67	7.88	8.22	8.57	8.83	9.02	8.67	7.93
16	7.72	7.94	8.34	8.77	9.32	9.42	9.3	8.29
20	7.87	8.1	8.45	9.07	10.06	10.26	10.9	9.18

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.6°	3.74	143.3°	3.98
8	41.1°	4.55	146.6°	5.01
10	39.6°	5.13	148.7°	5.91
12	38.2°	5.36	150.7°	6.53
14	37.8°	5.46	151.6°	6.88
16	37.6°	5.54	173°	7.37
20	37.8°	5.65	175.7°	8.16

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°	5.68	6.77	7.38	7.58	7.67	7.72	7.87
60°	5.99	7.04	7.57	7.79	7.88	7.94	8.10
75°	6.37	7.38	7.79	8.02	8.22	8.34	8.45
90°	6.54	7.52	7.99	8.34	8.57	8.77	9.07
110°	6.24	7.44	8.01	8.43	8.83	9.32	10.06
120°	6.07	7.31	7.93	8.46	9.02	9.42	10.26
135°	5.45	6.75	7.60	8.11	8.67	9.30	10.90
150°	4.60	5.79	6.83	7.54	7.93	8.29	9.18