Istituto Idrografico della Marina- page 4
Istituto Idrografico della Marina is the Italian Navy Hydrographic Office and is in charge of all the official nautical documentation published in Italy. In order to produce updated and accurate charts, I.I.M. performs regular surveys of the Italian coasts and seas - over 550,000 square kilometres of sea waters and more than 7,800 kilometres of coastline – to collect data for nautical publications and charts, both paper and electronic. These products, together with nautical information data diffused nationally and internationally, represent the official documentation required for the safety of navigation by national and international standards