Hey there

There is no particular information about whether we can use Aadhar card as domicile certificate or not in navy. However mentioned below are the all the required documents which are needed for application form:

• Matric or equivalent certificate for verification of the date of birth.
• Marksheet and certificate of diploma or higher board examination.
• Domicile certificate

For more: https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.careers360.com/careers/articles/how-to-join-indian-navy-after-12th-counar/amp&ved=2ahUKEwi1_L3Kw-TzAhVuwjgGHfziCRkQFnoECAsQAQ&usg=AOvVaw0Xo_ZcVR_pq5O1FsJv2X7o&ampcf=1