Section 13.609 - [Effective 1/17/2025] Requirements to qualify for an STCW endorsement for Basic Oil and Chemical Tanker Cargo Operations(a) Every applicant for an endorsement in Basic Oil and Chemical Tanker Operations must: (1) Qualify for a national endorsement as Tank Vessel-Assistant DL; and(2) Provide evidence of meeting the standards of competence identified in Table A-V/1-1-1 of the STCW Code (incorporated by reference, see § 13.103 ).