You can join Indian navy by applying following exam;-

NDA(National Defense services):

National Defence Academy (NDA) is an national level entrance exam conducted by Union Public Service Commission (UPSC) for recruiting candidates to the Indian Defence forces that includes Indian Army, Indian Navy and Indian Air Force.

NDA exam Age limits;-

Your age should be between 16.5-19 years.
You must be passed 12th standard from a recognized university.

Important Dates

NDA NA Exam (1) 2016

Date of Notification: 2nd January, 2016
Last date for filled application Forms: 29 January , 2016
Date of exam: 17th April , 2016

NDA NA Exam (2) 2016

Date of Notification: 18th June, 2016
Last date for filled application Forms: 15 July, 2016
Date of exam: 18th September, 2016

CDS(Combined Defense Services)

UPSC (Union Public Service Commission) conducts CDS exam twice in a year for the candidates, who want to make their career in Indian Air Force, Indian Naval Academy, Military Academy, and Officer training Academy.

CDS exam Age limits;-

Your age must be between 19-23 years.
You must be passed a graduation degree from a recognized university.

CDS II 2016 Important Dates:

Releasing date of CDS II 2016 Notification: 16th July, 2016.

Final Date of Receipt of Applications: 12th August 2016

Exam Date of CDS II 2016: 23rd October, 2016