Dear Mr. Marrero,
Thank you for posting your request on History Hub!
For information regarding Navy general courts-martial (GMC) records after 1976, please write to the Office of the Judge Advocate General, United States Navy, 1322 Patterson Avenue, Suite 3000, Washington, DC 20374-5066. They also oversee USMC GMCs.
We hope this is helpful. Best of luck with your research!