An aquatic vegetation cutter adaptable to a bow of a vessel having rotatable, cultivator-type cutter disks on converging angles along each side of the bow, and extending partially below the water line. Smaller ancillary cutter disks are mounted to the leading face of the larger cultivator-type cutter disks. The larger cutter disks and smaller ancillary cutter disks are driven using at least one drive motor, a series of drive sprockets and a connecting drive chain.