Radio officers are required on certain merchant vessels of the United States. The determination of when a radio officer is required is based on the Federal Communications Commission requirements as found in 47 CFR part 13 and 47 CFR part 80.

[CGD 81-059, 52 FR 38652, Oct. 16, 1987. Redesignated and amended by USCG-2004-17914, 78 FR 78001, 78008, Dec. 24, 2013]