Abstract: A distributed and buoy tracking and mesh network communication system includes buoy node devices having critical, designated placement determined navigational guidance criteria. Each buoy node apparatus serves a dual navigation and data transmission function.

Abstract: In one embodiment, a differential water data analysis system includes a data storage, a user interface, and a processor coupled to the data storage and programmed with software to: receive inflow water measurement data from a water inflow line entering a water treatment system and outflow water measurement data from a water outflow line exiting the water treatment system, the inflow water measurement data and outflow water measurement data being obtained by measuring the water in the water inflow line and the water outflow line at about the same time and being received in real time; compare the inflow water measurement data and the outflow water measurement data; compute a performance of the water treatment system based on the comparison using a computation scheme; determine whether the performance is within specification of the water treatment system to produce a determination output; and display the determination output in the user interface.

Abstract: Disclosed is a navigational map updating system. Map readers provide users with a map corresponding to a location along a waterway for use when transiting thru the location. Conditions of the location being displayed within a map may change over time requiring map data used within a map reader to requiring updating. These updates may be applied periodically for conditions that change slowly over time. When conditions are changing rapidly and when critical conditions change at a location, updates are needed rapidly to enable users to maintain current representations of the location in the maps. RSS feeds provide an efficient technique to provide notification of an update to a map quickly following its publishing without imposing a significant overhead for remote servers and map readers.

Abstract: A distributed and buoy tracking and mesh network communication system includes buoy node devices having critical, designated placement determined navigational guidance criteria. Each buoy node apparatus serves a dual navigation and data transmission function.