The eligibility criterion for Coast Guard Assistant Commandant in each of the branch is different. Like for being eligibile to become an Assistant Commandants in the General Duty Branch You have to be atleast a graduate and studied maths and physics upto +2 class and passed Second Mates exam.
Whereas for for Assistant Commandants in the Pilot/Navigator Branch you should again be a graduate with a valid pilot licence and
For Assistant Commandants in the Technical Branch graduation in engineering in specific branches is required. The age limits for different branches varies between 19 years to 30 years.