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| French bathyscaphe Archimède | |
|---|---|
| Name | Archimède |
| Caption | Bathyscaphe Archimède at sea |
| Type | Bathyscaphe |
| Owner | French Navy |
| Operator | CNRS |
| Ordered | 1956 |
| Builder | Société des Ateliers et Chantiers de la Loire |
| Laid down | 1957 |
| Launched | 1961 |
| Status | Decommissioned, preserved |
French bathyscaphe Archimède
The French bathyscaphe Archimède was a deep-diving submersible developed in the late 1950s and launched in 1961 as part of a Franco-Italian era of oceanographic exploration led by agencies and institutions across Europe and North America. Designed to reach abyssal and hadal depths, Archimède operated under the auspices of the French Navy, Centre National de la Recherche Scientifique, and collaborated with international organizations such as the Woods Hole Oceanographic Institution, Scripps Institution of Oceanography, and National Oceanic and Atmospheric Administration. Its development involved industrial partners including Société des Ateliers et Chantiers de la Loire, and research partnerships with universities like Université Pierre et Marie Curie, University of Cambridge, and Massachusetts Institute of Technology.
Archimède's conception was influenced by earlier pioneers such as Auguste Piccard, Jacques Piccard, and the Italian bathyscaphe Trieste project, as well as by advances at Harvard University and École Polytechnique laboratories. The hull design drew on pressure sphere research from Naval Research Laboratory, Centre National d'Études Spatiales, and metallurgical studies at Commissariat à l'énergie atomique et aux énergies alternatives. Construction was undertaken by Société des Ateliers et Chantiers de la Loire with components sourced from firms like Schneider Electric, Thomson-CSF, and Saint-Gobain. The pressure sphere used high-strength alloys similar to work at Wärtsilä and Brown Boveri, and flotation tanks used a gasoline mixture developed with chemists from Université de Strasbourg and engineers from Dassault Aviation. Systems integration incorporated acoustic navigation research from NATO laboratories, sonar technologies pioneered at Bell Labs, and life-support protocols influenced by NASA and European Space Agency medicine teams.
After sea trials off Brest, France and Toulon, Archimède entered service with the French Navy and the CNRS oceanographic fleet alongside vessels such as Calypso (ship), Jean Charcot (ship), and research ships from IFREMER. Deployment areas included the Mediterranean Sea, North Atlantic Ocean, Gulf of Mexico, and the Mariana Trench region during international expeditions involving the United States Navy, Royal Navy, and scientific crews from University of Tokyo and Australian National University. Archimède participated in coordinated campaigns with platforms like RV Calypso, RV Pourquoi Pas?, and RV Pourquoi-Pas?-affiliated operations, and was supported logistically by heavy-lift assets from DCNS and Ateliers et Chantiers de la Loire.
Archimède achieved several milestone dives, reaching record depths in collaboration with teams from Scripps Institution of Oceanography, Woods Hole Oceanographic Institution, Lamont–Doherty Earth Observatory, and the Monterey Bay Aquarium Research Institute. Noteworthy operations included abyssal surveys in the Azores region, dives over the Mid-Atlantic Ridge, and exploratory missions near the Puerto Rico Trench and Kermadec Trench. These dives often ran concurrently with expeditions from NOAA Ship Okeanos Explorer, RV Sonne, and RV Atlantis (AGOR-25), contributing to mapping work tied to International Hydrographic Organization charts and bathymetric campaigns coordinated with GEBCO and IOC programs. Archimède's depth records were cited alongside achievements of Trieste, Deepsea Challenger, and Alvin (DSV-2).
Equipped with instrumentation developed in collaboration with CNRS, IFREMER, University of Paris, and international laboratories, Archimède carried cameras, sampling arms, and sensors similar to systems from Schlumberger, Sercel, and Kongsberg Gruppen. Scientific payloads included chambered cell samplers developed with Max Planck Institute for Marine Microbiology, pressure-retaining samplers modeled after work at Monterey Bay Aquarium Research Institute, and in situ measurements using probes designed by Lamont–Doherty Earth Observatory. Missions addressed questions championed by researchers at Université Laval, University of British Columbia, University of California, San Diego, and National Institute of Oceanography (India) on topics ranging from plate tectonics-related processes to chemosynthetic ecosystems analogous to those studied at Galápagos Rift and Lost City Hydrothermal Field. Data from Archimède contributed to publications in journals associated with Nature, Science (journal), and Journal of Geophysical Research.
Crews combined naval personnel from French Navy dive units, scientists from CNRS and universities such as Sorbonne University, University of Oxford, and technical teams from IFREMER and INSEE-linked institutes. Support vessels ranged from research ships like RV Pourquoi Pas?, RV Nadir, and RV Pourquoi Pas?-associated tenders to auxiliary ships from Compagnie Générale Transatlantique. Logistic coordination required port facilities in Marseille, Brest, Cherbourg, and international ports including Honolulu, San Diego, and Papeete. Safety procedures incorporated standards from International Maritime Organization guidelines and medical protocols developed with Institut Pasteur and Hôpital Européen Georges-Pompidou.
Archimède influenced later submersible design at institutions such as IFREMER, Woods Hole Oceanographic Institution, and private ventures like OceanGate and work by James Cameron. Its instrumentation legacy informed remotely operated vehicle development at Schilling Robotics and Fugro. After decommissioning, Archimède's hull and components were preserved for display and study in museums and institutions including Musée National de la Marine, Cité de la Mer, and research collections at Université de Bretagne Occidentale. Archimède's role is recalled in collective histories with references to explorers like Jacques-Yves Cousteau, engineers from École des Mines de Paris, and oceanographers at Scripps Institution of Oceanography, marking a chapter in Franco-international deep-sea exploration shared with projects such as Trieste, Alvin (DSV-2), and Deepsea Challenger.
Category:Bathyscaphes Category:Research submarines of France