Yes! You can study GME after B.E in mechanical engineering. U can apply for various colleges like SCI, ANGLO EASTERN, SIMS, IMS. But now a days there is recession in shipping industry, u might not get a job after doing GME. You will be paid 500-600$ during training as a junior engineer, training period is of 6-10 months, after that u have to appear for 4th engineer exam, if you pass it then salary will be good.