After disintegration of the USSR the Russian Federation is compelled to buy manganese ores abroad. In a shelf zone of the seas washing borders of the Russian Federation, there are deposits ferromanganese concretion which industrial development will allow to solve partially a problem of absence of own manganous raw material. Existing means for development of firm minerals of a sea-bottom do not allow to fulfil effectively the given deposits, therefore creation new winning machine combining high efficiency and ecological safety is an actual scientific and technical problem.