The United States Coast Guard (USCG) recorded 47 deficiencies to foreign flag Mobile Offshore Drilling Units (MODUs) in 2022.
MODUs that are engaged in Outer Continental shelf (OCS) activities, under the jurisdiction of the United States, are inspected by the USCG under the authority of reference. Below is a summary of the frequency in the different categories:
| Category | Number issued |
| Fire/Weather boundaries | 8 |
| Rescue/Life boats | 5 |
| Oil Record Book & OWS | 4 |
| Electrical | 4 |
| Ballast | 3 |
| Manning/License | 2 |
| Not Repeated or Trending | 18 |
A familiarity with deficiency trends can assist operators in identifying systems that require additional attention. Furthermore, frequent safety inspections by the crew might assist in determining whether any flaws exist. Knowing about defect trends can assist improve the quality of routine inspections.
