33 CFR 155.805: Closure devices for transfer hoses

Last reviewed: October 14, 2026

This section covers closing off transfer hoses on board that are not in use for a transfer. Each end of each such hose must be blanked off with an approved type of closure. New, unused hose is exempt.

Applies toTransfer hoses on board that are not connected for the transfer of oil or hazardous material.

What it says

  1. Each end of each transfer hose on board that is not connected for the transfer of oil or hazardous material must be blanked off.

    33 CFR 155.805(a)“Each end of each transfer hose on board which is not connected for the transfer of oil or hazardous material must be blanked off”

  2. The blanking may use butterfly valves, wafer-type resilient seated valves, blank flanges, or other means acceptable to the COTP or OCMI.

    33 CFR 155.805(a)“butterfly valves, wafer-type resilient seated valves, blank flanges, or other means acceptable to the COTP or OCMI”

  3. New, unused hose is exempt from the blanking requirement in paragraph (a) of this section.

    33 CFR 155.805(b)“New, unused hose is exempt from the requirement in paragraph (a) of this section.”

Common questions

Do unused transfer hoses have to be blanked off?

Yes. Each end of each transfer hose on board that is not connected for the transfer of oil or hazardous material must be blanked off.

“Each end of each transfer hose on board which is not connected for the transfer of oil or hazardous material must be blanked off”

What can I use to blank off a transfer hose end?

You may use butterfly valves, wafer-type resilient seated valves, blank flanges, or other means acceptable to the COTP or OCMI.

“butterfly valves, wafer-type resilient seated valves, blank flanges, or other means acceptable to the COTP or OCMI”

Is new hose exempt from the blanking requirement?

Yes. New, unused hose is exempt from the requirement in paragraph (a) of this section.

“New, unused hose is exempt from the requirement in paragraph (a) of this section.”

The text of 33 CFR 155.805

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

Closure devices

(a) Each end of each transfer hose on board which is not connected for the transfer of oil or hazardous material must be blanked off with butterfly valves, wafer-type resilient seated valves, blank flanges, or other means acceptable to the COTP or OCMI.

(b) New, unused hose is exempt from the requirement in paragraph (a) of this section.

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.