For GMDSS renewal, fill one application form avaible on the Ministry of Communication (MoComm) website. Make a draft of Rupees 500/- (other details from the website). Do the online registration and save the code generated over there. Make photocopies of CDC and GoC. Now have the attestation done from gazettered officer/public notary,. Send the photocopies , + the application form ,+ bank draft to the MoCC, or deliver by hand. it takes 2~3 months for the renewal leaf to arrive, (it is reportedly similar to our GOC Endorsement page).
http://www.wpc.dot.gov.in/, go to licence, renewal of licence , creat your userid and password, again go to same renwal section log in with userid , selct GMDSS renewal , enter your licence no , you will get the details and can apply for it.
