Odd - it used to be during Reftra (refresher training assessment) on a ship one of the things they would do is eliminate all the electronics and force the crew to go back to basic manual things such as line of sight/celestial navigation, semaphore/flashing light comms, manual/gas powered pumps, hand loading munitions, etc...I’m guessing since training has supposedly gotten so bad that they’ve since abandoned a lot of the basic backups.
That's NOT how ships work. It was considered 'Amazing' when some ships were able to control the ship's speed directly from the bridge instead of through the Engine Order Telegraph of the Lee Helm.
US Navy ships are designed to still be functional when all the technology goes to hell. In the 1921 an early US submarine, USS R-14 (SS-91) got stranded at sea for lack of usable fuel while searching for a missing tugboat, USS Conestoga. There was not enough power left in the batteries to call for help on the radio.
So what did they do? They sewed together hammocks and blankets and sailed the submarine back to Pearl Harbor. Yes, they sailed a submarine. FWIW - the CO of the submarine was Lieutenant Alexander Dean Douglas, USN, shown here in the top left, without a hat.
For the achievement and spirit of innovation, Lieutenant Douglas received a letter of commendation from his Submarine Division Commander, CDR Chester W. Nimitz.
SpyNavy
Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)
LonePalm, le Républicain du verre cassé (The Broken Glass Republican)