Yes, you can pursue post-graduate diploma courses like Graduate Marine Engineering (GME) or post-BSc nautical science programs even after completing a non-marine degree. However, you must have studied PCM in 10+2. Some companies also hire graduates for shore-based maritime positions.

You can work on various types of vessels including container ships, tankers (oil, chemical, LNG), bulk carriers, cruise ships, passenger vessels, offshore supply vessels, and specialized ships like car carriers or refrigerated cargo ships. Your training and certificates determine which vessels you can serve on.

Most modern ships have internet connectivity, though it may be slower and limited compared to shore-based connections. You can communicate with family through email, messaging apps, and occasional phone calls. Some ships also have crew welfare programs with better connectivity options.

The career ladder is well-defined. Deck officers progress from Trainee Officer → Third Officer → Second Officer → Chief Officer → Captain. Engine officers move from Trainee → Fourth Engineer → Third Engineer → Second Engineer → Chief Engineer. Each promotion requires passing competency exams and sea-time experience.

While formal swimming certification isn't always mandatory for admission to maritime courses, you must learn swimming as it's part of the training curriculum. You'll need to complete various water safety and survival courses during your training, so basic swimming ability is highly recommended before joining.