air stream produced by the propeller 23 is directly proportional to the revolutions per minute of the engine 30 as is the normal case with the operation of the air boat once the scoop is beneath the debris to be removed from the waterway the rewinding of cables 4 and 13 respectively will effectuate the lifting of the debris from the waterway and suspension of it upon the prongs of the scoop 6 the design of the scoop 6 allows the water which may be carried upward with the lifting of the scoop 6 to drain from the debris thereby lightening the load considerably and allowing for more weight to be carried upon the prongs of the scoop 6 rather than wasting energy in lifting of great quantities of water it should be noted that during the lift operation maintaining the deck in a relatively level position is very desirable from a safety aspect as well as workability in order to accomplish this feat a rudder like air foil 24 positioned to the rear of the propeller 23 and horizontally pivoted so at the sides of the propeller screen 26 such that the pitch can be changed so as to direct the airstream up so as to counterbalance the weight of the load being accepted by the scoop 6 as the water drains from.