Abstract: Sea-growth is removed from submerged ship-hull surfaces by the utilization of an apparatus which comprises a net with a predetermined mesh design made from an explosive cord with predetermined charge and manufactured in a specific net pattern for obtaining sequential ignition in a predetermined direction.The method further includes the positioning of the net in a specific mode at a predetermined distance from the submerged hull surface and the initiation of the net at certain points at timed intervals thereby controlling the energy dissipation and the removal of the sea-growth in sections along the ship hull surfaces.