Naval signalling apparatus, namely, safety-warning lights in the nature of strobes, rotating lights and bar lights; electrical navigational instruments; electro-dynamic apparatus for the remote control of signals; Motion detectors for drones, unmanned aerial vehicles (UAVS), and unmanned aerial systems (UAS); Distance measuring apparatus for drones, unmanned aerial vehicles (UAVS), and unmanned aerial systems (UAS); remote control apparatus for drones, unmanned aerial vehicles (UAVS), and unm...