Smirnov Y. Scientifically-applied aspects of maintenance with navigating river charts of an economy of Ukraine

The work is dedicated to scientific and applied aspects of Ukrainian national economy's provision with navigational river charts. It has been analyzed the historical background and peculiarities of the rivers charting in the territory of Ukraine, experience of river charts creation and their use for navigational purposes, as well as the trends of research and charting of inland waterways in the past. The role of river navigational charts in provision the facilities for safe navigation in compliance with international standards and the opportunities for development of river domain in general have been studied. Definitions of main terms and notions in relation to navigational river charts have been justified. Basic features of navigational river charts' content and objective in accordance with the modern needs of navigators have been determined. It has been developed the classification of the complex of navigational guides. Principal directions and methods of practical application of navigational river charts have been identified. It has been improved the methodical scheme pertaining to forming the data base for river navigational charts preparation and methodology of collection of navigational and hydrographic information for river charts production. It has been proposed the regionalization of river water areas depending on the levels of required reliability of bathymetric data for the purpose of river navigational charts production.