Final answer:
The President of the United States, as Commander in Chief, is responsible for maintaining Navy Regulations to meet the current needs of the Department of the Navy.
Step-by-step explanation:
The responsibility of maintaining Navy Regulations and ensuring that they conform to the current needs of the Department of the Navy rests with the President of the United States. As outlined in Section 2 of the U.S Constitution, the President serves as the Commander in Chief of the Army and Navy, and by extension, oversees the creation and amendment of regulations governing these forces. This authority is also vested in the Executive Branch of government through administrative agencies that implement legislation and issue rules or regulations to enforce a statute.