15.401—Employment and service within restrictions of credential.
A person may not employ or engage an individual, and an individual may not serve, in a position in which an individual is required by law or regulation to hold a license, certificate of registry, merchant mariner's document, transportation worker identification credential, and/or merchant mariner credential, unless the individual holds all credentials required, as appropriate, authorizing service in the capacity in which the individual is engaged or employed and the individual serves within any restrictions placed on the credential. Beginning April 15, 2009, all mariners holding an active license, certificate of registry, MMD, or MMC issued by the Coast Guard must also hold a valid transportation worker identification credential (TWIC) issued by the Transportation Security Administration under 49 CFR part 1572.
[USCG-2006-24371, 74 FR 11260, Mar. 16, 2009]