CCI
Chamber of Commerce and Industry.
CEA/LDG
Commissariat à l'Energie Atomique et aux Energies Alternatives / Laboratoire de Détection et de Géophysique (Atomic energy and alternative energy commission / Detection and geophysical laboratory).
CENALT
Centre national d'alerte aux tsunamis (national tsunami alert centre)
CETE
Centre d'études techniques de l'équipement (equipment technical study centre).
CETMEF
Centre d'Etudes Techniques Maritimes Et Fluviales (maritime and fluvial technical study centre).
CG
Conseil Géneral (county council).
CGC
Commission de gestion de configuration (configuration management committee).
CGEDD
Conseil général de l'environnement et du développement durable (general council for the environment and sustainable development).
Chart datum
Same as hydrographic datum.
CIL
Correspondant Informatique et Libertés (data protection coordinator).
CIMER
Comité interministériel de la mer (interministerial committee for the sea)
Civil time
Mean time plus 12 hours.
CNES
Centre National d'Etudes Spatiales (national space study centre)
CNRS
Centre National de la Recherche Scientifique (national scientific research centre).
Coefficient
Measurement of the amplitude of the tide expressed relative to the unit of height.
Concordance; species concordance
Tidal analysis and prediction technique using the relations between the elements of a standard port and those of a secondary port.
Cotidal line
Line on a chart passing through all the points at which high tide occurs at the same time.
CR
Conseil Régional (regional council)
CRATANEM
Centre régional d'alerte aux tsunamis pour l'Atlantique Nord-Est et la Méditerranée (Regional tsunami alert centre for the North East Atlantic and Mediterranean)
Current amplitude
Maximum speed during a tidal cycle.