Marine and land-based navigational apparatus and equipment, namely, rate gyro and compass, display unit, control box, and rudder feedback for autopilot; digital navigational apparatus and equipment, namely, autopilot; electrical and electronic communications equipment for navigation, namely, GPS antennas, receivers, and sensors; gyroscopes for use in stabilisation and navigational systems; inertial navigation apparatus and equipment, namely, inertial navigation receivers; navigation apparatus for vehicles in the nature of on-board computers; navigation compasses and sextants; navigation computers and software for vehicles; data storage apparatus and instruments, namely, data storage computer hardware for use in vehicles for collection, storage, and tracking of vehicle activity; radar apparatus for use in navigation; radio transmitters for navigational use; road map display panel for assisting in the navigation of a vehicle; satellite navigational system, namely, a global positioning system consisting of antennas and sensors; differential beacon lights; mobile data receivers for tracking and locating vehicles; network communication modems, aerials, GPS aerials; satellites and satellite communications processors; and replacement parts and fittings for the aforesaid goods