Naval Officer

You may refer to following link for list of top B.Tech Mechanical Engineering colleges in India: https://www.shiksha.com/b-tech/ranking/top-mechanical-engineering-colleges-in-india/48-2-0-0-0
There are multiple options to join Indian Navy after B.Tech Mechanical Engineer:
(a) CDS Entry: CDS entry consists of written exam conducted by the UPSC, followed by conduct of the SSB interview, medical test by Indian Navy (naval candidates only) and final preparation of merit list by UPSC. The appointment letter is issued by IHQ MoD/DMPR. The training of officers selected through this entry commences in the month of Jan/Jul and the advertisement is published in Nov/Jul.
(b) NCC Entry: The vacancies for Naval Wing Senior Div NCC C certificate holders are published along with CDSE advertisement. No written test is conducted for this entry. The eligible candidates are required to forward their application directly to IHQ MoD (N)/ DMPR through DGNCC. The candidates are deputed for SSB interview. After qualifying SSB these candidates undergo medical examination and if found fit, are inducted in the Indian Navy on the basis of All India Merit. The training of officers selected through this entry normally commences in the month of Jan/Jul every year.
(c) Direct Entry: The Direct entries are controlled by IHQ MoD (Navy) /DMPR and cater for both Permanent Commission (PC) and Short Service Commission (SSC). Advertisements calling for application from eligible candidates for such entries are published in the leading newspapers and Employment News twice in a year between Feb to May and Aug to Nov. The applications are received and candidates are shortlisted for SSB based on cut off decided by IHQ MoD (Navy)/ DMPR. The SSB qualified candidates undergo medical examination and if found fit, are inducted in the Indian Navy on the basis of All India Merit.