Service Hydrographique et Océanographique de la Marine (SHOM) maintains several nautical charts of the islands.
The isolated and almost unpopulated Southern Indian Oceanic islands of the Kerguelen and Crozet groups and the islands Amsterdam and St. Paul comprise the French Southern and Antarctic Territory. Mapping has been carried out by the French Institut Géographique National (IGN), and the islands are covered by photogrammetric maps at a number of different scales dating from the late 1960s, with some more recent activity. Île Amsterdam and St. Paul have been mapped to French Série bleue specifications at 1:25,000 scale, the latest edition being published in 1992. Île aux Cochons in the Crozet group has also been mapped in this series, but Possession Island appears on a 1:50,000 scale map with 20 m contours. The Kerguelen group is covered in three 1:100,000 sheets, with 50 m contours and hill shading, dating from the late 1960s. Derived six-color general maps at 1:200,000 also cover Kerguelen and Crozet and have 100 m contours and hill shading. All these scales are on the UTM projection, International ellipsoid.