46 CFR 13.115: Chemical testing for original tank vessel endorsements

Last reviewed: October 14, 2026

This section covers chemical testing for people applying for an original tank vessel endorsement. Each applicant must provide evidence of a passed chemical test for dangerous drugs or of qualifying for an exemption from testing.

Applies toEach applicant for an original tank vessel endorsement.

What it says

  1. Each applicant for an original tank vessel endorsement must provide evidence of having passed a chemical test for dangerous drugs, or evidence of qualifying for an exemption from testing.

    “Each applicant for an original tank vessel endorsement must provide evidence of having passed a chemical test for dangerous drugs or of qualifying for an exemption from testing”

  2. The exemption from testing that an applicant may use instead of a passed test is the one in § 16.220 of this subchapter, as specified in § 10.225(b)(5) of this subchapter.

    “or of qualifying for an exemption from testing in § 16.220 of this subchapter as specified in § 10.225(b)(5) of this subchapter.”

Common questions

Do I need a drug test for an original tank vessel endorsement?

You must provide evidence of having passed a chemical test for dangerous drugs, or evidence of qualifying for an exemption from testing.

“Each applicant for an original tank vessel endorsement must provide evidence of having passed a chemical test for dangerous drugs or of qualifying for an exemption from testing”

Where is the exemption from chemical testing for tank vessel endorsement applicants found?

The text names § 16.220 of this subchapter for the exemption from testing. It also refers to § 10.225(b)(5) of this subchapter.

“or of qualifying for an exemption from testing in § 16.220 of this subchapter as specified in § 10.225(b)(5) of this subchapter.”

The text of 46 CFR 13.115

Electronic Code of Federal Regulations (eCFR), current as of April 16, 2026 · Read it on eCFR

Chemical testing requirements

Each applicant for an original tank vessel endorsement must provide evidence of having passed a chemical test for dangerous drugs or of qualifying for an exemption from testing in § 16.220 of this subchapter as specified in § 10.225(b)(5) of this subchapter.

Sections it refers to

The plain-English explanation on this page was written with AI from the regulation text above and checked automatically before publishing: every quote appears in the text, every number comes from it, and a second model confirmed each statement adds nothing the text doesn't say. Regulation text current as of April 16, 2026. The regulation text governs. RegKnot is not affiliated with the U.S. Coast Guard.