46 C.F.R. § 50.10-23

The term Marine Safety Center refers to the Commanding Officer, Marine Safety Center, U.S. Coast Guard Stop 7430, 2703 Martin Luther King Jr. Avenue SE, Washington, DC 20593-7430 for mail. Send mail in a printed or electronic format. Information for submitting the documents electronically can be found at https://www.uscg.mil/HQ/MSC.