9 Things You Must Know Before Joining the Merchant Navy 

Explore 9 essential tips before joining the Merchant Navy, eligibility, health, CDC, streams & more

Chief Officer Jyotindra
October 17, 2025
6 min read

Introduction

Thinking of joining the Merchant Navy? It sounds like a ticket to adventure: travel, sea breeze, global ports. But reality has layers. Before you take the plunge, there are structural, regulatory, physical, and personal factors to understand. Below are nine key things I wish someone had laid out clearly when I first looked into this path.

I designed this with students and aspiring seafarers in mind: simple language, step-by-step clarity, no fluff. Let’s go.

1. Eligibility Criteria

You can’t just decide today and ship off tomorrow, there are minimum rules.

  • In India, institutes under DG Shipping (Directorate General of Shipping) set the base requirements. Only those institutes are officially recognized to issue valid maritime certificates.
  • Depending on the stream (deck, engineering, catering), the academic prerequisites differ. For example, many courses require 10+2 with Physics, Chemistry, Mathematics (PCM).
  • Some courses (e.g. GP Rating) allow entry after 10th standard, but with stricter physical and medical requirements.

Always verify the eligibility requirement for the specific course and institute.

2. Entrance Exams & Admission Tests

Securing a spot isn’t just about meeting eligibility, there’s competition.

  • The Indian Maritime University (IMU) conducts the IMU CET exam for many undergraduate and postgraduate maritime courses. It tests Quantitative Ability, Logical Reasoning, Verbal Ability, Data Interpretation, etc.
  • Some institutes or shipping companies conduct their own exams or sponsorship tests.
  • Scoring well is crucial, you often need a good rank to get into the institute or stream you prefer.

Prepare early. Practice sample papers, understand exam format, time management.

3. DG Shipping Approved Institutes

This one is non-negotiable.

  • Only DG Shipping approved institutes can legally deliver pre-sea training recognized by shipping authorities.
  • If you join a non-approved institute, the certificate or degree you earn might not be valid when you look for ship placements.
  • Always verify whether an institute is in the DG Shipping list of approved training schools.

Prioritize recognition over fancy infrastructure or flashy brochures.

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4. Medical Fitness

Your health is a gatekeeper in this line of work, no exceptions.

  • Before admission, and before joining a ship, you’ll need to pass a medical fitness check by a DG Shipping–approved panel doctor.
  • Standard checks include eyesight (typically 6/6 vision; color blindness is often disqualifying), hearing, cardiac health, lungs, etc.
  • Even if you meet academic criteria, any serious medical disorder may exclude you.
  • This fitness must be maintained over your career; a condition developed later might affect ship postings.

Don’t skip this: you’ll want a clean bill before paying fees or relocating.

5. Choosing the Correct Stream

The Merchant Navy is not monolithic. You have to pick where you’ll specialize. Some common streams:

  • Deck (Nautical / Navigation side), You aim to become deck officers, navigators, eventually a captain.
  • Engineering, You work with engines, machinery, technical systems aboard ship.
  • Catering / Hospitality / Hotel Services, Food, lodging, guest services aboard cruise or passenger ships.
  • Ratings / Ratings Support Roles, Non-officer roles doing essential support work.

Pick based not just on prestige but on your aptitude, your interest in technical work vs. navigation vs. service, and your tolerance for the job’s demands.

Also Read: How to Join Merchant Navy After 10th: Courses, Eligibility & Career Path

6. Sponsored vs. Non-Sponsored Academies

This distinction can affect your cost, commitment, and job security.

  • Sponsored training means a shipping company gives you a conditional place or sponsorship before you begin. You may get job assurance (after training) but higher obligations (maybe bonded service).
  • Non-sponsored means you enroll in the institute independently, without a guaranteed employer. You bear more risk, but also more freedom.
  • Sponsored programs often charge additional “placement cost” or have terms about how many years you must serve.

Weigh the risk vs. reward: sponsorship reduces early job-search stress, but may tie you down.

7. Indian CDC, Continuous Discharge Certificate

This is your maritime identity, your logbook, your official record.

  • CDC (Continuous Discharge Certificate) is often called the “seaman’s book.” It records every ship you join and your sea time.
  • Issued by DG Shipping under rules (Continuous Discharge Certificate rules) and valid for 10 years in India (or renewable terms)
  • Without a valid CDC, you can’t legally board a commercial ship. It’s like a passport for seafarers.
  • It includes your personal details, voyage history, certifications, etc.
  • If expiry happens while you are on a ship, it remains valid until end of voyage (a useful caveat)

How to apply (briefly): You submit an online DG Shipping application, upload documents (photo, signature, 10th certificate, medical fitness, address proof, etc.), pay fees (e.g. ~₹700), and wait for processing and dispatch. 

Because this is foundational, make sure you (or your institute) handle it properly.

8. Tax-Free Income for Non-Resident Seafarers

One financial benefit is often overlooked.

  • Under Indian Income Tax laws, your income is taxable if your residential status is “resident.”
  • But if you are physically outside India for 183 days or more in a financial year (per passport or CDC record), you may qualify as a Non-Resident Seafarer. In that case, your income earned abroad could be tax-free in India.
  • This status is not automatic, records must support your sea time, travel, and CDC/passport logs.
  • A good incentive, yes, but don’t rely on it until your documentation is airtight.

9. Proper Etiquette & Soft Skills

You’ll be a floating micro-society; how you interact matters.

  • You’ll meet people from many nationalities and cultures aboard. Respect, adaptability, open attitude count.
  • Discipline is non-negotiable, schedules, safety, hierarchy: these rules enforce survival.
  • Communication, teamwork, patience, emotional strength, these matter as much as technical knowledge.
  • Positive attitude, humility, willingness to learn daily, your reputation on board can influence promotions, peer support, and well-being.

Soft skills often separate those who survive and thrive vs those who struggle.

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Bonus: A Few Extra Tips

While sticking with your nine, you should also keep these in view:

  • Beware of scams, fake institutes, fake job offers. There have been fraud cases around “merchant navy jobs” promises.
  • INDOS number, Indian National Database of Seafarers. You’ll need this for many official processes.
  • Career growth and pay, salaries depend heavily on rank, ship type, experience. Don’t assume a big salary from the start.
  • Time away from home, life at sea includes stretches away, isolation, and adapting to rigid timetables.
  • Renewals, upskilling, certifications, the shipping industry changes; you’ll need to stay current with additional courses and competencies.

The Bottom Line

Joining the Merchant Navy is exciting, but it’s not a fantasy. It demands discipline, endurance, precision, and humility. If you enter with eyes open, knowing eligibility rules, health constraints, institutional legitimacy, the importance of CDC, and the soft skills required, you stand a much better chance of building a fulfilling maritime career.

Jyotindra

Chief Officer Jyotindra

A seafarer by profession and a dreamer for change.... Open to explore,learn,think and discuss on topics ranging from bottom of sea to ever expanding universe...

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