Section 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 .CGFR 62-39, 27 FR 11259, Nov. 15, 1962, as amended by CGD 77-228, 43 FR 53427, Nov. 16, 1978