Argentine Coast Guard (Argentine Naval Prefecture)

The Argentine Coast Guard (Argentine Naval Prefecture. In spanish: Prefectura Naval Argentina) is a police institution charged with protecting the country's rivers and maritime territory. It is responsible for the prevention of water pollution, the safety of life at sea, vessel inspections, the National Register of Ships, ports security, and other activities.
Crédito: aviacionargentina.net

This institution fulfills the functions of other countries' coast guards, and also acts as a gendarmerie force policing navigable rivers.
It has the navigation administrative jurisdiction. Therefore all the procedureres and paperwork concerning vessel registration, security certificates, shipping control, and many others should be submitted to it.

The Prefecture's main facility is located in the Edificio Guardacostas, at Madero Avenue 235, Buenos Aires.