DRIFTER SAIL: ORC Rating

GPH

466.5

OSN

455.8

LOA

15.235 m

Displacement

8173 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8773

Medium

1.1497

High

1.3416

Triple Offshore

Low

1.1366

Medium

1.4387

High

1.6511

Boat Specifications

Dimensions

Length overall: 15.235 m
Beam: 4.21 m
Draft: 3.46 m
Displacement: 8173 kg
Crew weight: 830 kg
Wetted surface: 45.02 m²

Sails

Mainsail: 92.63 m²
Genoa: 66.7 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 235.44 m²

Design

Type: Swan 50
Builder: OY Nautor AB
Designer: Kouyoumdjian
Year built: 2016

Performance data

Polar CSV

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

6,43,6.631538,52,7.39,60,7.81,75,8.12,90,7.97,110,7.69,120,7.31,135,6.51,141.1,6.039244,150,5.43
8,40.3,7.499984,52,8.46,60,8.83,75,9.13,90,9.05,110,9.03,120,8.79,135,8.21,142.8,7.570337,150,6.96
10,39.1,7.911898,52,8.9,60,9.24,75,9.7,90,9.8,110,9.92,120,9.76,135,9.3,147.2,8.49427,150,8.24
12,38.3,8.155189,52,9.17,60,9.52,75,10.08,90,10.44,110,10.71,120,10.67,135,10.3,150,9.2,151.8,9.066117
14,38.2,8.373026,52,9.35,60,9.75,75,10.39,90,10.9,110,11.3,120,11.59,135,11.41,149.7,10.099658,150,10.07
16,37.7,8.480536,52,9.5,60,9.93,75,10.64,90,11.28,110,11.85,120,12.43,135,12.58,147.1,11.433746,150,11.08
20,37.8,8.605906,52,9.69,60,10.17,75,11,90,11.9,110,12.99,120,13.84,135,14.48,145.8,14.315413,150,13.67
24,38.9,8.634833,52,9.68,60,10.22,75,11.19,90,12.36,110,14.11,120,14.78,135,17.05,147.6,17.433985,150,17

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	7.39	7.81	8.12	7.97	7.69	7.31	6.51	5.43
8	8.46	8.83	9.13	9.05	9.03	8.79	8.21	6.96
10	8.9	9.24	9.7	9.8	9.92	9.76	9.3	8.24
12	9.17	9.52	10.08	10.44	10.71	10.67	10.3	9.2
14	9.35	9.75	10.39	10.9	11.3	11.59	11.41	10.07
16	9.5	9.93	10.64	11.28	11.85	12.43	12.58	11.08
20	9.69	10.17	11	11.9	12.99	13.84	14.48	13.67
24	9.68	10.22	11.19	12.36	14.11	14.78	17.05	17

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	4.85	141.1°	4.7
8	40.3°	5.72	142.8°	6.03
10	39.1°	6.14	147.2°	7.14
12	38.3°	6.4	151.8°	7.99
14	38.2°	6.58	149.7°	8.72
16	37.7°	6.71	147.1°	9.6
20	37.8°	6.8	145.8°	11.84
24	38.9°	6.72	147.6°	14.72

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°	7.39	8.46	8.90	9.17	9.35	9.50	9.69	9.68
60°	7.81	8.83	9.24	9.52	9.75	9.93	10.17	10.22
75°	8.12	9.13	9.70	10.08	10.39	10.64	11.00	11.19
90°	7.97	9.05	9.80	10.44	10.90	11.28	11.90	12.36
110°	7.69	9.03	9.92	10.71	11.30	11.85	12.99	14.11
120°	7.31	8.79	9.76	10.67	11.59	12.43	13.84	14.78
135°	6.51	8.21	9.30	10.30	11.41	12.58	14.48	17.05
150°	5.43	6.96	8.24	9.20	10.07	11.08	13.67	17.00