Insulating element from mineral fibers for shipbuilding with an insulating element in form of a plate or roll felt for shipbuilding the composition of the mineral fibers of the insulating element points an alkalialkaline-earth mass ratio of the fiber structure of the insulating element is determined by an average geometrical fiber diameter of \u22664 \u03bcm and a surface weight of 0. The first composite material and the second composite material individually comprise hard particles in a binder. An alteration request may be received from a user. The cardholders are arranged about the chamber in an aesthetic manner. In some implementations, the cable also includes a jacket surrounding the filler, conductors, and threads.