FOUR WINDS: ORC Rating

GPH

633.5

OSN

614.6

LOA

13.442 m

Displacement

12784 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6321

Medium

0.8598

High

1.0102

Triple Offshore

Low

0.8153

Medium

1.0736

High

1.2153

Boat Specifications

Dimensions

Length overall: 13.442 m
Beam: 3.78 m
Draft: 2.27 m
Displacement: 12784 kg
Crew weight: 750 kg
Wetted surface: 38.15 m²

Sails

Mainsail: 39.86 m²
Genoa: 58.78 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 144.27 m²

Design

Type: Swan 44
Builder: Nautor
Designer: Sparkman&Sthephens
Year built: 1972

Performance data

Polar CSV

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

6,43.1,4.519543,52,5.04,60,5.33,75,5.56,90,5.51,110,5.57,120,5.43,135,4.89,145.5,4.368263,150,4.16
8,41.1,5.268303,52,5.93,60,6.24,75,6.5,90,6.56,110,6.75,120,6.57,135,6,148,5.318095,150,5.21
10,41.2,5.954162,52,6.7,60,6.98,75,7.19,90,7.36,110,7.48,120,7.39,135,6.99,146.5,6.355786,150,6.12
12,41.2,6.538945,52,7.19,60,7.38,75,7.53,90,7.73,110,7.86,120,7.8,135,7.55,148,7.039695,150,6.89
14,40.1,6.811157,52,7.44,60,7.61,75,7.76,90,7.89,110,8.15,120,8.11,135,7.89,149.5,7.381366,150,7.34
16,39.4,6.936414,52,7.58,60,7.76,75,7.93,90,8,110,8.43,120,8.43,135,8.2,150,7.64,174,6.827401
20,38.6,7.024768,52,7.7,60,7.91,75,8.21,90,8.36,110,8.77,120,9.04,135,8.85,150,8.08,178,7.614639

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.04	5.33	5.56	5.51	5.57	5.43	4.89	4.16
8	5.93	6.24	6.5	6.56	6.75	6.57	6	5.21
10	6.7	6.98	7.19	7.36	7.48	7.39	6.99	6.12
12	7.19	7.38	7.53	7.73	7.86	7.8	7.55	6.89
14	7.44	7.61	7.76	7.89	8.15	8.11	7.89	7.34
16	7.58	7.76	7.93	8	8.43	8.43	8.2	7.64
20	7.7	7.91	8.21	8.36	8.77	9.04	8.85	8.08

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.1°	3.3	145.5°	3.6
8	41.1°	3.97	148°	4.51
10	41.2°	4.48	146.5°	5.3
12	41.2°	4.92	148°	5.97
14	40.1°	5.21	149.5°	6.36
16	39.4°	5.36	174°	6.79
20	38.6°	5.49	178°	7.61

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°	5.04	5.93	6.70	7.19	7.44	7.58	7.70
60°	5.33	6.24	6.98	7.38	7.61	7.76	7.91
75°	5.56	6.50	7.19	7.53	7.76	7.93	8.21
90°	5.51	6.56	7.36	7.73	7.89	8.00	8.36
110°	5.57	6.75	7.48	7.86	8.15	8.43	8.77
120°	5.43	6.57	7.39	7.80	8.11	8.43	9.04
135°	4.89	6.00	6.99	7.55	7.89	8.20	8.85
150°	4.16	5.21	6.12	6.89	7.34	7.64	8.08