The Hydrographic Institute (IH), an agency of the Portuguese Navy, was established by Decree-Law No. 43177 of 22 September 1960. The IH works in direct dependency on the Admiral Chief of the Army General Staff, and the jurisdiction over the definition of strategic guidelines and to monitor its execution, carried out by the Minister of National Defense in conjunction with the Minister of Education and Science and the Minister of Agriculture and the Sea. IH is recognized as State Laboratory, enjoying autonomy administrative and financial.