FEATURE ARTICLE Wartsilla is a leading supplier of ship-borne degaussing systems for all kinds of surface vessels and submarines. Its systems cover the full range of magnetic silencing for all types of naval vessels including for magnetic protection against the hazard of magnetic sea mines, depicted above. It has provided more than 220 systems for various navies. Another provider of degaussing systems is the L3 Power Paragon unit of L3Harris Technologies. Its Advanced Degaussing System, for example, provides controlled current to independent degaussing coils embedded throughout the hull of a ship. The Bipolar Amplifier Units (BPAU's) provide precise current required to create composite magnetic fields that oppose and neuL3Harris degausser tralize the ship's magnetic signature as it moves across the waters. These fields are formed by the BPAUs controlling the polarity and intensity of current flow through each degaussing coil. The BPAU's monitor their functional status and status of the coils they are driving. For more info, see www.pnicorp.com, www.polyamp.com, www. l3harris.com, and www.wartsila.com. www.MagneticsMag.com November/December 2020 * Magnetics Business & Technology 15http://www.pnicorp.com http://www.polyamp.com http://www.l3haris.com http://www.l3haris.com http://www.wartsila.com http://metrolab.com http://www.MagneticsMag.com