A cutting device for coupling to a water vessel propelling device. The cutting device comprises a base extending between a proximal end and a distal end and is coupled to a shaft of the water vessel propelling device. An upper arm is coupled to the base. A lower arm is coupled to the base. A track extends along the base. A blade slidably engages within the track for displacing between the upper arm and the lower arm. An actuator displaces the blade relative to the track. A cutting edge is on the blade for severing a foreign object that is positioned between the upper arm and the lower arm of the base.