The dock vessel has the tow compartment for placement of tug-boats, and technological compartment. The technological compartment is made as a
hangar at the bottom of which a central channel is located, along its upper boundaries, the rack-ledges with symmetrical location to the right and left, toward the
hull, are placed on which the technological equipment for the water-
oil emulsion treatment is placed. Between the dock-vessel
hull walls and side walls of the central channel, the containers for collection of the
emulsified oil are placed. The central channel of the technological compartment is equipped with, at least, two bulkheads in which, the hermetically pluggable openings located at different levels are made. The floating boom is made as the sectional net sleeve filled with elastic porous adsorbent and provided with positive
buoyancy in the top edge of doubled net forming the net sleeve and
negative buoyancy at its lower edge.