In the absence of enacted appropriation or continuing resolution, the Coast Guard is required to execute an orderly suspension of some operations and activities. In general, the Coast Guard will continue operations authorized by law that provide for national security, or that protect life and property. However, certain administrative functions will be limited. In this post, the Office of Commercial Vessel Compliance provides guidance to assist vessel owners, operators, and other affected parties during the lapse in appropriations.
Source: Domestic Vessels
Link: 1/24/2019: Commercial vessel safety during lapse in appropriations