No Girls can Not join Indian Naval Academy just after 12th, To enter into Navy after 12th One need to appear for NDA for which Girls are Not eligible. You must be a graduate to Join Indian Naval Academy. At the official Website Of Indian Navy, you can see that for all the post for which girls are eligible they need to satisfy minimum graduation criterion. The link is given below.

https://www.joinindiannavy.gov.in/en/page/women-in-the-navy.html