{"data":{"id":"us/46-cfr-13.503","jurisdiction":"us","citation":"46 CFR 13.503","heading":"Service requirements.","body":"(a) Each applicant for a Tank Vessel-Engineer endorsement must provide evidence of at least—\n(1) 90 days of service as an engineering officer on tankships or self-propelled tank vessels certified to carry DL or LG appropriate to the endorsement applied for;\n(2) 90 days of rating or cadet service in the engine department on tankships or self-propelled tank vessels certified to carry DL or LG appropriate to the endorsement applied for; or\n(3) A combination of the service in paragraphs (a) (1) and (2) of this section.\n(b) Each applicant already holding an MMC endorsed as Tank Vessel-Engineer for DL and seeking an endorsement for LG, or the converse, must prove at least half the service required by paragraph (a) of this section.","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 E—Requirements for Tank Vessel-Engineer 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":"6075d4ac0d146a11e73678ee33e8b2ba6f39319015985e25e128e748647b0b02","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-13.501","next":"us/46-cfr-13.505"},"notice":"GroundRules: Original legal text. Not legal advice."}