Means employing hydro-jets for facilitating the clearing of disa
Means for increasing the efficiency of an ice disaggregation sys
Method and apparatus for breaking ice with water
Method and means for increasing the maneuverability of a ship in
Method and the means for removing ice from a ship's channel
Method for aerating bodies of water
Method for changing the characteristics of a ship and a hull for
Method of adding propulsive force to ice breaker
Method of and apparatus for disaggregating particulate matter