Dear Mr. Maassen,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located the Logbooks of U.S. Navy Ships and Stations, 1941 - 1983 in the Records of the Bureau of Naval Personnel (Record Group 24) that include the deck logs for the USS McMorris (DE-1036) and the USS Epperson (DD-719) from 1970 through 1972, and the USS Collett (DD-730) from 1 January 1970 until its decommissioning on 18 December 1970. These records are in the custody of the National Archives at College Park - Textual Reference (RDT2).
We will be pleased to make these records available to you or your representative in our research room at the National Archives in College Park, MD. The National Archives at College Park is located at 8601 Adelphi Road, College Park, MD, near the University of Maryland--College Park campus. Textual Research Room (Room 2000) hours are 8:45 a.m. to 5:45 p.m. Monday through Friday, except federal holidays. Our consultation room hours are 8:45 a.m. to 4:00 p.m. Monday through Friday, except legal holidays. No appointment is necessary. We do not pull in advance. Prior to your visit, please consult our website at https://www.archives.gov/dc-metro/college-park/.
You may also contact RDT2 via email at firstname.lastname@example.org to request a quote for ordering digital copies of these records.
In regards to your broader question about the ease of accessing the deck logs of any naval warships that served in the Gulf of Tonkin during the Vietnam era, the National Archives does not have any finding aids that list ships by where they served. However there may be records regarding task force compositions in the Records of the Office of the Chief of Naval Operations (Record Group 38) that can provide lists of ships assigned to the area at specific time periods. To access these records contact RDT2 via email at email@example.com. There may also be useful information on the Naval History and Heritage Command’s web page Records Relating to the Vietnam Conflict.
We hope this information is helpful. Best of luck with your research!
[information provided by Nate Patch, Subject Matter Expert]