Coast Guard Sustained Funding Act of 2023

This bill ensures Coast Guard personnel continue receiving pay during budget gaps specific to the Coast Guard. It mandates automatic funding for military members (including reserves), qualified civilian employees, and contract workers providing essential support during a "Coast Guard-specific funding lapse" - defined as when no Coast Guard funding bill passes before the fiscal year begins. The bill covers pay and benefits for these groups until a formal funding bill is enacted or a budget resolution without Coast Guard funding passes. It does not apply to general government shutdowns but targets only Coast Guard operations. The measure aims to prevent disruptions to critical Coast Guard missions during funding delays.