French Naval Hydrographic and Oceanographic Service

French Naval Hydrographic and Oceanographic Service
Agency name	Service hydrographique et océanographique de la Marine
Native name	Service hydrographique et océanographique de la Marine
Abbreviation	SHOM
Formed	1886 (as Bureau des longitudes activities earlier)
Preceding1	Bureau des longitudes
Jurisdiction	France
Headquarters	Vernon, Normandy
Parent agency	French Navy

French Naval Hydrographic and Oceanographic Service The French Naval Hydrographic and Oceanographic Service provides hydrographic, oceanographic and nautical information for France, its overseas territories such as French Guiana, Réunion, New Caledonia, and international partners including NATO and European Union. It supports maritime safety for commercial shipping linked to International Maritime Organization conventions, underpinned by collaborations with institutions like Ifremer, CNRS, Météo-France, Université de Bretagne Occidentale, and École Navale. SHOM’s responsibilities intersect with historic organizations such as the Bureau des longitudes, scientific bodies like the Royal Society, and standards authorities including the International Hydrographic Organization.

History

SHOM traces roots to the nautical charting initiatives of the Bourbon Restoration era and naval expeditions of figures like La Pérouse and Bougainville, building on cartographic traditions associated with the Dépot de la Marine and the École des Ponts ParisTech. The service formalized in the late 19th century amid advancements by instrument makers such as Sextant innovators and the adoption of chronometers following voyages like HMS Beagle surveys. Twentieth-century milestones include roles during the First World War and Second World War, participation in post-war reconstruction with agencies like Organisation des Nations unies technical bodies, and modernization tied to satellite eras exemplified by collaborations with CNES and European Space Agency. SHOM adapted to digital charting trends after conventions like SOLAS revisions and the establishment of International Hydrographic Organization standards.

Organisation and Responsibilities

SHOM operates regional directorates and research units in locations including Vernon, Brest, and overseas bases in Papeete and Nouméa. It reports to the Ministry of Armed Forces while interacting with ministries such as Ministry of Ecology and agencies like Port autonome de Nantes Saint-Nazaire. Core responsibilities encompass production of official nautical charts recognized under SOLAS, maintenance of tidal networks like those coordinated with Permanent Service for Mean Sea Level datasets, and dissemination of Notices to Mariners consistent with International Maritime Organization guidance. SHOM liaises with universities including Sorbonne Université and international partners such as United Kingdom Hydrographic Office and United States Naval Observatory.

Hydrographic Surveying and Chart Production

Hydrographic operations deploy multibeam echo sounders and side-scan systems during surveys influenced by pioneers like Matthew Fontaine Maury and methods refined by Admiral Sir George Back. Chart production follows symbology and standards promulgated by the International Hydrographic Organization and integrates bathymetric models linked to initiatives such as GEBCO and EMODnet. SHOM produces raster and vector nautical charts compatible with systems from vendors like Jeppesen and navigation standards set by International Electrotechnical Commission. Survey campaigns support ports including Marseille, Le Havre, and Dakar through hydrographic soundings, seabed classification influenced by research at Institut océanographique de Paris, and updates complying with SOLAS obligations.

Oceanographic Research and Services

Oceanographic work addresses physical oceanography, geodesy, and climate signals, contributing data to programs such as Copernicus, Argo profiling floats, and GOOS. SHOM collaborates with laboratories like LOCEAN, LEGOS, and Ifremer on sea-level rise, thermohaline circulation, and marine geodesy tied to International VLBI Service for Geodesy. It provides products used by stakeholders including EDF (Électricité de France) for coastal planning, TotalEnergies for offshore operations, and academic projects from Université de Montpellier. SHOM’s datasets inform policy processes at United Nations Framework Convention on Climate Change meetings and contribute to regional programmes like Pro madda and SPREP partnerships in the Pacific.

Vessels, Equipment and Technology

Survey vessels such as purpose-built ships reflect lineage with naval platforms like Bâtiment hydrographique classes; examples have worked alongside research vessels operated by Ifremer and international fleets including NOAA ships. Equipment includes multibeam echosounders from manufacturers tied to technologies tested aboard ships linked to Tidal gauges networks, autonomous systems developed through projects with CEA and unmanned surface vehicles comparable to assets used by Woods Hole Oceanographic Institution. SHOM integrates satellite altimetry products from TOPEX/Poseidon, Jason missions, and GNSS services tied to Galileo and GPS constellations to refine geoid models like those used in EGM series.

International Cooperation and Standards

SHOM is an active member of the International Hydrographic Organization and contributes to regional coordination mechanisms such as EU Maritime Safety Agency initiatives and bilateral agreements with the United Kingdom Hydrographic Office and Naval Hydrographic Office (USA). It engages in capacity-building with developing states through programs linked to UNESCO and supports charting harmonization in the Indian Ocean Commission and Organisation of Eastern Caribbean States. SHOM participates in standard-setting bodies including the ISO technical committees and works with research consortia like Marine Technology Society on interoperability and data standards such as S-57 and S-100.

Training, Education and Publications

SHOM provides training in hydrography and oceanography aligned with curricula from institutions such as École Navale, ENSTA Bretagne, and professional courses accredited by IHO standards. Educational outreach includes collaborations with museums like the Musée national de la Marine and publishing the Nautical Almanac alongside historical series echoing works by Ferdinand Magellan chroniclers. SHOM’s publications encompass nautical charts, tidal predictions, bathymetric datasets contributed to EMODnet, and scientific reports cited by journals such as Deep-Sea Research and Journal of Geophysical Research: Oceans.

Category:Hydrography Category:Oceanography Category:French Navy