LAGERTHA: ORC Rating

GPH

535.6

OSN

523.7

LOA

12.96 m

Displacement

7718 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7641

Medium

1.0172

High

1.1471

Triple Offshore

Low

0.9958

Medium

1.255

High

1.4017

Boat Specifications

Dimensions

Length overall: 12.96 m
Beam: 3.91 m
Draft: 2.74 m
Displacement: 7718 kg
Crew weight: 1085 kg
Wetted surface: 34.93 m²

Sails

Mainsail: 60.23 m²
Genoa: 48.98 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 187.07 m²

Design

Type: SWAN 42 CS
Builder: SWAN
Designer: FRERS
Year built: 2006

Performance data

Polar CSV

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

6,42.8,5.478856,52,6.12,60,6.47,75,7.05,90,7.29,110,7.11,120,6.76,135,5.89,143,5.371662,150,4.96
8,40.9,6.469508,52,7.27,60,7.54,75,7.89,90,8.11,110,8.05,120,7.87,135,7.32,145.5,6.515992,150,6.2
10,39,7.077178,52,7.84,60,8.02,75,8.21,90,8.53,110,8.58,120,8.43,135,8.11,149,7.384789,150,7.31
12,37.5,7.272926,52,8.07,60,8.27,75,8.5,90,8.85,110,9.15,120,9.01,135,8.64,150,8.06,151.8,7.920087
14,37.1,7.409878,52,8.18,60,8.41,75,8.79,90,9.11,110,9.71,120,9.62,135,9.27,150,8.45,151.5,8.340757
16,36.8,7.468172,52,8.24,60,8.49,75,8.98,90,9.34,110,10.18,120,10.29,135,10,150,8.88,176,7.819047
20,36.2,7.596408,52,8.38,60,8.64,75,9.17,90,9.88,110,10.9,120,11.6,135,11.86,143,11.093922,150,10.23

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.12	6.47	7.05	7.29	7.11	6.76	5.89	4.96
8	7.27	7.54	7.89	8.11	8.05	7.87	7.32	6.2
10	7.84	8.02	8.21	8.53	8.58	8.43	8.11	7.31
12	8.07	8.27	8.5	8.85	9.15	9.01	8.64	8.06
14	8.18	8.41	8.79	9.11	9.71	9.62	9.27	8.45
16	8.24	8.49	8.98	9.34	10.18	10.29	10	8.88
20	8.38	8.64	9.17	9.88	10.9	11.6	11.86	10.23

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	4.02	143°	4.29
8	40.9°	4.89	145.5°	5.37
10	39°	5.5	149°	6.33
12	37.5°	5.77	151.8°	6.98
14	37.1°	5.91	151.5°	7.33
16	36.8°	5.98	176°	7.8
20	36.2°	6.13	143°	8.86

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°	6.12	7.27	7.84	8.07	8.18	8.24	8.38
60°	6.47	7.54	8.02	8.27	8.41	8.49	8.64
75°	7.05	7.89	8.21	8.50	8.79	8.98	9.17
90°	7.29	8.11	8.53	8.85	9.11	9.34	9.88
110°	7.11	8.05	8.58	9.15	9.71	10.18	10.90
120°	6.76	7.87	8.43	9.01	9.62	10.29	11.60
135°	5.89	7.32	8.11	8.64	9.27	10.00	11.86
150°	4.96	6.20	7.31	8.06	8.45	8.88	10.23