An investigating officer is a Coast Guard official designated by the Commandant, a District Commander, or the Officer in Charge, Marine Inspection, for the purpose of conducting investigations of marine casualties or matters pertaining to the conduct of persons applying for or holding merchant mariner's documents, licenses, certificates or credentials issued by the Coast Guard. An Officer in Charge, Marine Inspection is an investigating officer without further designation.

[USCG-2006-25535, 71 FR 48482, Aug. 21, 2006]