Is it necessary to clear customs before going offshore?
The US Customs regulations for offshore activities center around the distinction between foreign and coastwise points on the Outer Continental Shelf (OCS).
Coastwise points include:
- Structures and installations on the OCS
- US coastwise qualified vessels on the OCS
- Foreign vessels that are attached to the seabed and engaged in exploration, development, installation, or production activities, such as jack-up vessels, drill rigs, or anchored vessels (this requires a two-part test, with the vessel touching the seabed and being involved in exploration, installation, or production).
Foreign points on the OCS are:
- Foreign-flagged vessels that are not attached to the seabed:
- Free-floating vessels
- Vessels on dynamic positioning
- Vessels engaged in pipe or cable laying
- Vessels involved in survey and installation support activities.
Determining whether your vessel or aircraft is going to a foreign or coastwise point on the OCS is crucial for meeting the proper CBP reporting requirements. Failure to comply with customs reporting can result in penalties, fines, and delays.
For guidance on determining if your vessels are subject to CBP reporting requirements, contact us.


