https://www.militarytimes.com/news/your-navy/2020/03/23/navy-regs-update-religious-headgear-in-uniform-provides-rules-for-beard-chits/
Navy regs update religious headgear in uniform, provides rules for beard chits
Aug 18, 2022 - Sikh sailors are now allowed to wear turbans, unless they interfere with protective gear.
navy regsin uniform