It is more a military thing than just Navy. AF was really hot on safety. No rings on the flight line was pretty much a hard rule. My wife was in the AF when I met and married her and she said she wanted all appendages attached so remove the ring at work for safety. Hers was cut off her finger years later in the ER after fracturing a finger playing volleyball at a picnic and swelling did not allow removal the normal way. Now no one wears rings around our house.