The degaussing station was a countermeasure against magnetic mines. Specific methods include overwriting, degaussing, encryption, and media destruction. I fitted with degaussing coils to trigger magnetic mines. The magnetic signatures were measured with degaussing coils. The residual magnetization of the core can be removed by degaussing. This degaussing field is strong enough to remove shadow mask magnetization in most cases. Products manufactured include remote controls, degaussing coils and injection molded parts. As optical media are not magnetic, they are not erased by conventional degaussing. Thereafter, a ship's magnetic field could be counteracted by a process called degaussing. Navies use the deperming procedure, in conjunction with degaussing, as a countermeasure against this. There are some domains whose magnetic alignment is not randomized after degaussing. During this refit, the cruiser was fitted with degaussing equipment. A degaussing coil was fitted in July. Much of the wiring throughout the ship was replaced, and a degaussing cable was installed. Built into the system are shaking and degaussing wires.