SD DRAIN

Satellite navigational system, namely, a global positioning system (GPS); real time kinematic (RTK) satellite navigational system; electronic navigational devices for the purposes of navigation and positioning of tractors and agricultural equipment; electronic navigational devices for guiding the operator of a vehicle in a field and for controlling field drainage equipment; computer hardware and software system for guiding the operator of a tractor in a field and for controlling field drainage equipment; computer hardware and software system for calculating the total cut volume for a drainage ditch, saving and recalling fields, and saving and recalling drainage ditches in a field