Mobile Offshore Drilling Units (MODUs)

A mobile offshore drilling unit or MODU, as defined in 33 CFR 140.10, is "a vessel, other than a public vessel of the United States, capable of engaging in drilling operations for exploration or exploitation of subsea resources." [emphasis added]

Additional 33 CFR 140.10 definitions that also apply to a MODU include OCS facility (when in contact with the seabed of the OCS for exploration or exploitation of subsea resources), unit and vessel. §140.10 definitions that do NOT apply to a FOF include manned platform.

Please use the menu to the left or the links provided below to learn about MODUs and the U.S. Coast Guard oversight of these units:

  ○  Types of Mobile Offshore Drilling Units

  ○  Regulations, Policy and Guidance applicable to MODUs

  ○  Frequently Asked Questions (FAQs)