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The origins of the OGS Institution date back to the second half of the 18th century, when, under the patronage of Maria Teresa of Habsburg, the Jesuits instituted the School of Astronomy and Navigation to respond to the need to develop marine traffic after the proclamation of Trieste as a free port, in 1719.

Since then, the OGS has passed through a series of reorganizations and several changes of denomination, Imperial Academy for Commerce and Sciences of the Sea in 1817, Meteorological Observatory in 1841, Marine Observatory in 1903, Institute of Geophysics of Trieste in 1921, Thalassographic Institute of Trieste in 1941, which together with the independent seismic station of Trieste became the Geophysical Observatory in 1949, Experimental Geophysical Observatory of Trieste in 1958 and Experimental Geophysical Observatory in 1989, before acquiring its current status as the National Institute of Oceanography and Experimental Geophysics, in 1999.

The acronym OGS has been in use in order to abbreviate its Italian name of Osservatorio Geofisico Sperimentale, since 1958.

If you want to know more about the history of OGS, click here (in Italian)