Abstract
Nautical chart, as an instrument of navigation, must be kept up to date insure the safety of navigation. Particularly our effort is devoted to the maintenances of the large-scale charts. The photogrammetric procedures in the hydrographic survey or coastal mapping have been developed over the last several years against this background of large-scale charts. Then, many researches on these hydrographic photogrammetry are carried out at hydrographic office, university, on government organization in several states. Applications of photogrammetry to these new fields are briefly reviewed in this paper.
