Association of Diving Contractors.
ADEC,Alaska Department of Environment Conservation.
ADF,Automatic Direction Finder
ADN,Accord du transport Dangereux par voie Navigable (European accord for the transport of dangerous good by inland waterways)
ADNR,Accord du transport Dangereux par voie Navigable pour Rhin (European accord for the transport of dangerous good on inland waterways: Rhine)
ADR,Accord du transport Dangereux par Route (European accord for the transport of dangerous good by road)
A/F,All Fast
AFL-CIO,American Federation of Labor and Congress of Industrial Organizations
AFRA,Average Freight Rate Assessment
AFRAMAX,A tanker of such size as to take commercial advantage under Worldscale (generally