Created in 1930 as a government agency, the ENIM became in 2010 a public administrative establishment.
It is placed under the supervision of the ministers responsible for the Sea, Social Security, and the Budget and under the oversight of the new Directorate general for Maritime affairs, Fisheries and Aquaculture.
[1] [2] ENIM manages the special social security scheme for sailors and seafarers in the merchant marine, fishing fleet, marine farming and boating, with regard to the risks of old age, death, accidents at work and occupational diseases, illness, maternity and invalidity.
[1] [3] ENIM insures around 40,000 active sailors and around 120,000 pensioners in mainland France and overseas, their dependents as well as high school and university students studying at maritime educational establishments.
[3] The ENIM has a personnel cadre of 330 employees spread over the four geographical sites.