The arrondissement of Rochefort is an arrondissement of France in the Charente-Maritime department of the Nouvelle-Aquitaine region. Since the January 2017 reorganization of the arrondissements of Charente-Maritime, it has 78 communes.
Wikipedia https://en.wikipedia.org/wiki/Arrondissement_of_Rochefort
Coordinates 45°56'39.351" N -0°58'8.556" E