"Harbour Information" product contains 13 object classes, the acronyms used are those of IHO standard S-57 - International Hydrographic Organization – (https://iho.int/):

- Berth (BERTHS): place in which a ship is moored at wharf

- Isolated building localizing a harbour office (BUISGL)

- Checkpoint (CHKPNT)

- Crane (CRANES)

- Floating dock (FLODOC): floating structure of one or more sections which can be partly submerged by controlled flooding to receive a vessel, then raised by pumping out the water so that the vessel's bottom can be exposed for maintenance.

- Gridiron (GRIDRN): structure in the intertidal zone serving as a support for vessels at low tide to permit work on the exposed portion of the vessel's hull.

- Harbour area (HRBARE) : administrative area of a port, including all docking and handling facilities, as well as short-term storage facilities.

- Harbour facility (HRBFAC)

- Hulk (HULKES) : hull of a wrecked or condemned ship, from which the fittings and superstructure have usually been removed, which is moored in a permanent position or grounded.

- Oil barrier (OILBAR)

- Pilot boarding place (PILBOP)

- Rescue station (RSCSTA)

- Small craft facility (SMCFAC)

Detailed definitions of each of these object classes can be found in the S-57 standard (https://iho.int/en/standards-and-specifications).

An online catalog is available at http://www.s-57.com/.

Some of the symbols used for display on data.shom.fr portal have been adapted from icons from the OpenSeaMap open library (https://github.com/OpenNauticalChart/).