Hi aspirant,

The eligibility criterias for appearing in navy aa ssr is as follows:

• The candidates must have a minimum of 10+2 degree certificate with 60% or more marks in aggregate from any recognized institution.
• Candidates must have a certificate in Maths and Physics and at least any one of these subjects: Chemistry/Biology/Computer Science from the Boards of School Education recognized by MHRD, Govt. of India.

So following that, you can not appear examination as you are appearing candidate and do not hold a 10 + 2 degree certificate.

Hope it helps!!