An applicant for an original tankerman endorsement in subpart B, C, D, or E of this part must have obtained at least 25 percent of the qualifying service and, if the endorsement requires transfers, at least two of the qualifying transfers, within 5 years of the date of application. [CGD 79-116, 60 FR 17142, Apr. 4, 1995, as amended by USCG-2004-17914, 78 FR 77994, Dec. 24, 2013]