{"data":{"id":"us/46-cfr-13.403","jurisdiction":"us","citation":"46 CFR 13.403","heading":"Service requirements.","body":"(a) Each applicant already holding an MMC endorsed as Tank Vessel-Assistant for DL and seeking one for LG, or the converse, must—\n(1) Provide evidence of at least half the service required in § 13.401(e)(2) and successfully complete a professional examination for the topics identified in table 1 to § 13.121(e) appropriate to the endorsement applied for; or\n(2) Complete a course in DL or LG appropriate to the endorsement applied for as prescribed in § 13.401(e)(1).\n(b) [Reserved]","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER B—MERCHANT MARINE OFFICERS AND SEAMEN","PART 13—CERTIFICATION OF TANK VESSEL PERSONNEL","Subpart D—Requirements for Tank Vessel-Assistant Endorsement"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-46.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:22Z","sha256":"ac7f72c7f7d8e3ee7bed5ac29576c6c78ddeb58e972675c8e6a6cfd892669e54","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-13.401","next":"us/46-cfr-13.405"},"notice":"GroundRules: Original legal text. Not legal advice."}