Having been a submariner for my entire career at sea. I can tell you the movie is an insult to all who have worked on a submarine. Presenting highly trained men and women as buffoons leads the general public to believe their support is squandered.
The whole premise of attacking Ft. Sumter is ridiculous because it is a National Monument operated by the dedicated men and women of the National Parks Service; however, if charged with defending the fort against any threat foreign or domestic, I have no doubt they’d defend it valiantly down to the last man, woman or nonbinary docent.
For much of my career I was stationed in Orlando, FL, where I began my career as a Jr. officer on the maiden voyage of a submarine that I would later command until she and I both retired in 1994. She is cared for and maintained as a museum in California. As for me, I’m on display on the porch of my trailer in La Casa Mobile Home Park, but I don’t seem to be having the the visitors I once had.
The Nautilus was a wonderful boat and I dived with her every working day. We’s load her up with passengers and head out to sea for a 20 minute dive. I made literally hundreds of dives on weekends and the Nautilus never failed. She had to be reliable because there was always a long line to ride the 20,000 Leagues Under the Sea: Submarine Voyage — Mr. Disney always demanded reliability.