How can I get join Indian navy force after passing 12th grade examination with good marks ??

You can join Indian navy force after passing 12th grade examination through National Defence Academy (NDA) examination

Here I am giving you information about required eligibility for National Defence Academy (NDA) examination organized by union public service commission..

Eligibility:
For air force and Naval Wings of National Defence Academy
You should be 10+2 passed with physics and mathematics subjects.

For Army wing of National Defence Academy :-
12th Class pass of the 10+2 pattern of School Education or equivalent examination conducted by a State Education Board or a University.

Age limit
16 ½ to 19 Years

Sex:
Only unmarried male candidates are eligible.

Vision Standards for Naval Candidates:
Uncorrected without glass 6/6
Corrected with glass 6/6
Limits of Myopia -0.75
Limits of Hypermetropia +1.5
Limits of Colour Perception I
Binocular Vision III