hello aspirant

You are not eligible for applying for merchant Navy as the Minimum eligibility criteria for Merchant Navy is that you must you must have 60% in aggregate marks in Physics, chemistry and Mathematics.

Furthermore, In order to join the Merchant Navy after 12th PCM as a deck officer, you can take the following 2 courses:

1. B.Sc. in Nautical Science (3 year degree course)
2. Diploma in Nautical Science (1 year diploma course)

Further, the eligibility criteria for merchant navy is as follows :

• Candidates must have completed class 12th with at least 60% marks with physics, chemistry, and mathematics as compulsory subjects.
• To fulfill the Merchant Navy age limit for bachelor course candidates must age between 17 to 25 years.

To know more about additional details in merchant navy you can follow the below mentioned link to know moire about it : https://www.careers360.com/careers/merchant-navy

I hope that this will help.