From the very beginning of their existence there was a close link between mathematics and maritime affairs, especially mathematics and navigation. Navigation as a combination of science, art and knowledge of navigating the ship in the shortest, safest and most convenient way from the beginning was dependent on math. The development of mathematics has influenced the development of maritime affairs, so it can be said that mathematics and maritime science followed each other through history. Mathematics is used in a maritime science for various calculations in shipping, shipbuilding, trade, management and navigation. Safety, profit and high level of automation of ships, ports and terminals would never reach today's levels without applying mathematical calculations. In this final project, the usefulness of mathematics will be observed through the application in terrestrial and astronomical navigation, and in the projection of navigation charts which, along with the compass, are the basic tools for safe navigation of each navigator.