NEW TRENDS IN THE CONTENT OF THE BULGARIAN NAUTICAL NAVIGATION CHARTS

International standard for nautical navigation charts consists in international nautical navigation charts and their symbols. This charts are published by the United Kingdom Hydrographic Office. From several years we have seen new trends in worldwide view for preparation of the nautical navigation charts. Hydrographic Offices of many maritime countries, including Bulgaria, began to make a significant changes in the nature and the content of their modern nautical navigation charts. The most important changes are observed in the symbols, in the used colors, in the duplication of all texts on local and English languages, in standardization of the characteristics of navigational aids, in the ground of the seabed, in the sources of information, etc. The major advantage of all these changes is that the nautical navigation charts of these countries will become competitive to the international charts issued by the United Kingdom Hydrographic Office. The report examines the Bulgarian nautical navigation charts issued until now and trends in their content in accordance with international standards in this field and increases their competitiveness in the market for this product.