COMDTINST 16000.75 — Marine Safety: Carriage Of Hazardous Materials

COMDTINST 16000.75 governs the carriage of hazardous materials, including hazardous materials safety and bulk transportation.

Search COMDTINST 16000.75

  • Publication number: COMDTINST 16000.75
  • Title: MARINE SAFETY: CARRIAGE OF HAZARDOUS MATERIALS
  • Date: 9/20/2021
  • Proponent: CG-CVC

View COMDTINST 16000.75 on armypubs.army.mil


It defines hazardous materials and classifies them as bulk liquids and liquefied gases, packaged cargoes, or bulk solids. It addresses foreign vessel certificates, liquefied gas ships, barges, military explosives, and loading permits.

Applies to: All Coast Guard unit commanders, commanding officers, officers-in-charge, deputy/assistant commandants, and chiefs of headquarters staff elements shall comply with the provisions of this Commandant Change Notice.

Topics covered

  • Hazardous materials safety
  • Bulk hazardous liquids
  • Liquefied gas ships
  • Barges carrying liquefied gases
  • Military explosives
  • Loading permits
  • International Maritime Organization Codes and Certificates

Questions and answers

What types of hazardous materials does COMDTINST 16000.75 address?

The Coast Guard's concerns for hazardous materials safety include those solids, liquids, and gases (liquefied or under pressure) that are dangerous to human life and property. (paragraph 1-2)

How are hazardous materials classified?

For purposes of hazard classification, hazardous materials are divided into three main categories: bulk liquids and liquefied gases, packaged cargoes, and bulk solids. (paragraph 1-2)

What does carried in bulk mean for vessel cargo?

The phrase "carried in bulk" refers to a commodity that is loaded or carried aboard a vessel without containers or labels and received and handled without mark or count. (paragraph 1-2)

When does a foreign chemical tanker need an IMO Certificate of Fitness to obtain a LOC?

Under 46 CFR Part 153, a foreign chemical tanker must have a valid COF to obtain a LOC; the same requirement applies to new liquefied gas ships under 46 CFR Part 154. (paragraph 2)

What permits are required for shipments of military explosives?

All shipments of military explosives, except those assigned to Coast Guard Class I (see 46 CFR 146.29-13) and those carried aboard public vessels, require loading permits from the COTP. (paragraph 1-07)

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