33 CFR § 125.17 - Persons eligible for Coast Guard Port Security Cards.
(a) Only the following persons may be issued Coast Guard Port Security Cards:
(1) Persons regularly employed on vessels or on waterfront facilities.
(2) Persons having regular public or private business connected with the operation, maintenance, or administration of vessels, their cargoes, or waterfront facilities.
(b) A holder of a Merchant Mariner's Document shall not be issued a Port Security Card, unless his Merchant Mariner's Document is surrendered to the Coast Guard. In this connection, see § 125.09.