Port winch
- drum circumference = 3.3 m
- six wraps of cable = 19.8 m which is also 2.5 " width of cable on the drum
- drum width is ~ 40 " which is 96 wraps or 316 m of cable
Marine Magnetics SeaSpy Magnetometer Operation Manual
Marine Magnetics SeaLINK Software Operation Manual
World Magnetic Model - 2019.0 Main Field Intensity
Magnetometer layback = 434 m from AFT_GPS or 508 m from moonpool (AI file / image)