The Army still maintains a sizable navy.
The U.S. Army Has a Pretty Well-Kept Secret: It Has Its Own Navy
Made up of “army mariners” instead of sailors, here’s how the Army’s navy stacks up against foreign navies.
https://www.popularmechanics.com/military/navy-ships/a45690242/us-army-has-its-own-navy/
This is quite fascinating. I was stationed at the Army’s garrison at Asmara, Ethiopia (now Asmara, Eritrea). We were supplied by Army convoy from a US Army operated seaport at Massawa on the Red Sea. From Massawa, we could watch Israeli gunboats.
While at the Asmara Army station, the Ethiopian Emperor, Haile Selassie, came for his annual medical checkup because he never trusted his own medical people. Of interest is the Ethiopian government would not allow us to have weapons superior to theirs. They had M14’s, so we had WWII M1’s. They had M-60’s, we had water cooled 30’s.
https://en.wikipedia.org/wiki/Kagnew_Station
Kagnew was actually a huge spy station.
Later when assigned to Ft Eustis, VA, I went to Norfolk where the Army had one of it’s naval stations, was invited to go for a boat ride, and went on a small ship or sorts for an hour or two.
Thanks for your updating information.