Induced currents and losses in single-core submarine cables

Impedances are defined for all conductors which constitute a submarine single-core cable: the central conductor, the metallic sheath, the reinforcement if any, the armor and the sea. Impedances of magnetic armor are considered in some detail and relevant numerical data are given. The presence of other cables, far apart in the sea, is taken into consideration. Rules for composition of impedances are given, from which the additional losses of the cable and the distribution of current between various conductors are computed.