BOEBES: ORC Rating

GPH

644.1

OSN

621.4

LOA

11.979 m

Displacement

8664 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6285

Medium

0.8633

High

1.011

Triple Offshore

Low

0.8043

Medium

1.0562

High

1.1898

Boat Specifications

Dimensions

Length overall: 11.979 m
Beam: 3.83 m
Draft: 2.25 m
Displacement: 8664 kg
Crew weight: 720 kg
Wetted surface: 32.57 m²

Sails

Mainsail: 34.16 m²
Genoa: 37.49 m²
Spinnaker: 115.5 m²
Asymmetric spinnaker: 0 m²

Design

Type: Swan 39
Builder: Nautor
Designer: R.Holland
Year built: 1978

Performance data

Polar CSV

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

6,43,4.484834,52,4.97,60,5.2,75,5.33,90,5.35,110,5.46,120,5.31,135,4.81,144.8,4.332157,150,4.08
8,40.8,5.27084,52,5.88,60,6.11,75,6.26,90,6.4,110,6.58,120,6.44,135,5.94,149.4,5.228047,150,5.19
10,39.4,5.849364,52,6.53,60,6.73,75,6.87,90,7.05,110,7.23,120,7.15,135,6.79,150,6.12,152.2,6.002842
12,38.6,6.269829,52,6.93,60,7.09,75,7.23,90,7.36,110,7.6,120,7.57,135,7.32,150,6.85,156.3,6.563553
14,37.7,6.483629,52,7.15,60,7.31,75,7.47,90,7.51,110,7.88,120,7.89,135,7.69,150,7.33,166.4,6.790396
16,37.3,6.574701,52,7.28,60,7.45,75,7.64,90,7.7,110,8.09,120,8.18,135,8.02,150,7.67,176.3,7.124851
20,37.3,6.687841,52,7.38,60,7.58,75,7.87,90,8.03,110,8.35,120,8.64,135,8.65,150,8.28,178.6,7.782323
24,37.8,6.7202,52,7.4,60,7.61,75,7.98,90,8.26,110,8.48,120,8.92,135,9.32,150,8.91,178.6,8.34249

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.97	5.2	5.33	5.35	5.46	5.31	4.81	4.08
8	5.88	6.11	6.26	6.4	6.58	6.44	5.94	5.19
10	6.53	6.73	6.87	7.05	7.23	7.15	6.79	6.12
12	6.93	7.09	7.23	7.36	7.6	7.57	7.32	6.85
14	7.15	7.31	7.47	7.51	7.88	7.89	7.69	7.33
16	7.28	7.45	7.64	7.7	8.09	8.18	8.02	7.67
20	7.38	7.58	7.87	8.03	8.35	8.64	8.65	8.28
24	7.4	7.61	7.98	8.26	8.48	8.92	9.32	8.91

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.28	144.8°	3.54
8	40.8°	3.99	149.4°	4.5
10	39.4°	4.52	152.2°	5.31
12	38.6°	4.9	156.3°	6.01
14	37.7°	5.13	166.4°	6.6
16	37.3°	5.23	176.3°	7.11
20	37.3°	5.32	178.6°	7.78
24	37.8°	5.31	178.6°	8.34

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°	4.97	5.88	6.53	6.93	7.15	7.28	7.38	7.40
60°	5.20	6.11	6.73	7.09	7.31	7.45	7.58	7.61
75°	5.33	6.26	6.87	7.23	7.47	7.64	7.87	7.98
90°	5.35	6.40	7.05	7.36	7.51	7.70	8.03	8.26
110°	5.46	6.58	7.23	7.60	7.88	8.09	8.35	8.48
120°	5.31	6.44	7.15	7.57	7.89	8.18	8.64	8.92
135°	4.81	5.94	6.79	7.32	7.69	8.02	8.65	9.32
150°	4.08	5.19	6.12	6.85	7.33	7.67	8.28	8.91