46 C.F.R. § 13.109
(a) Each tank vessel endorsement described in § 13.107 will expressly limit the holder's service under it to transfers involving one or both of the following cargo classifications:
[CGD 79-116, 60 FR 17142, Apr. 4, 1995, as amended by USCG-2008-0906, 73 FR 56508, Sept. 29, 2008; USCG-2006-24371, 74 FR 11259, Mar. 16, 2009; USCG-2004-17914, 78 FR 77988, Dec. 24, 2013]