DEFIANCE: ORC Rating

GPH

540.9

OSN

527.2

LOA

17.19 m

Displacement

19936 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7223

Medium

0.9988

High

1.1655

Triple Offshore

Low

0.952

Medium

1.2611

High

1.4234

Boat Specifications

Dimensions

Length overall: 17.19 m
Beam: 4.71 m
Draft: 2.7 m
Displacement: 19936 kg
Crew weight: 1248 kg
Wetted surface: 57.43 m²

Sails

Mainsail: 78.33 m²
Genoa: 87.15 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 172.13 m²

Design

Type: SWAN 56 STND/SHL D
Builder: NAUTOR
Designer: FRERS
Year built: 1998

Performance data

Polar CSV

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

6,43.9,5.412524,52,6.02,60,6.41,75,6.74,90,6.89,110,6.69,120,6.34,135,5.48,142.5,4.928447,150,4.52
8,42,6.418668,52,7.21,60,7.6,75,7.92,90,8.2,110,8.04,120,7.68,135,6.76,146.5,5.972041,150,5.75
10,41.2,7.203472,52,8.11,60,8.42,75,8.65,90,8.91,110,8.85,120,8.64,135,7.87,148,6.968944,150,6.82
12,41.2,7.761675,52,8.58,60,8.83,75,9.02,90,9.26,110,9.29,120,9.15,135,8.7,148,7.947662,150,7.78
14,40.3,7.958899,52,8.78,60,9.03,75,9.27,90,9.5,110,9.65,120,9.52,135,9.18,149.5,8.541958,150,8.5
16,39.8,8.069937,52,8.89,60,9.13,75,9.45,90,9.68,110,10.03,120,9.91,135,9.57,150,8.92,151.5,8.830051
20,39.4,8.139934,52,8.98,60,9.23,75,9.65,90,10.04,110,10.74,120,10.77,135,10.46,150,9.54,177.5,8.828403

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.02	6.41	6.74	6.89	6.69	6.34	5.48	4.52
8	7.21	7.6	7.92	8.2	8.04	7.68	6.76	5.75
10	8.11	8.42	8.65	8.91	8.85	8.64	7.87	6.82
12	8.58	8.83	9.02	9.26	9.29	9.15	8.7	7.78
14	8.78	9.03	9.27	9.5	9.65	9.52	9.18	8.5
16	8.89	9.13	9.45	9.68	10.03	9.91	9.57	8.92
20	8.98	9.23	9.65	10.04	10.74	10.77	10.46	9.54

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.9°	3.9	142.5°	3.91
8	42°	4.77	146.5°	4.98
10	41.2°	5.42	148°	5.91
12	41.2°	5.84	148°	6.74
14	40.3°	6.07	149.5°	7.36
16	39.8°	6.2	151.5°	7.76
20	39.4°	6.29	177.5°	8.82

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°	6.02	7.21	8.11	8.58	8.78	8.89	8.98
60°	6.41	7.60	8.42	8.83	9.03	9.13	9.23
75°	6.74	7.92	8.65	9.02	9.27	9.45	9.65
90°	6.89	8.20	8.91	9.26	9.50	9.68	10.04
110°	6.69	8.04	8.85	9.29	9.65	10.03	10.74
120°	6.34	7.68	8.64	9.15	9.52	9.91	10.77
135°	5.48	6.76	7.87	8.70	9.18	9.57	10.46
150°	4.52	5.75	6.82	7.78	8.50	8.92	9.54