A career in the merchant navy offers a structured rank-based hierarchy across three departments: Deck, Engine, and Catering, with a clear promotion ladder from cadet to captain governed by the Directorate General of Shipping (DGS) in India. Whether you are a Class 12 student exploring maritime options or a working professional researching a career change, this guide covers every merchant navy rank, what each officer does, how promotions work, and the steps to build a long, rewarding career at sea.
What Is a Career in the Merchant Navy?
A career in the merchant navy means working as a professional seafarer on commercial cargo ships, tankers, container vessels, or bulk carriers that transport goods and commodities across international waters. The merchant navy is the commercial fleet distinct from the naval (defence) fleet. It is regulated in India by the Directorate General of Shipping (DGS), which operates under the Ministry of Ports, Shipping, and Waterways. Globally, standards are set by the International Maritime Organization (IMO) under the STCW Convention (Standards of Training, Certification, and Watchkeeping).
India contributes approximately 9 percent of the world’s seafarer workforce, with over 2 lakh Indian sailors serving on international vessels at any given time. A merchant navy career is structured, internationally standardized, and offers clear rank-based progression tied to examinations and sea service.
Also read: Merchant Navy Salary in India: Job Profiles and Key Insights
Why Choose a Career in the Merchant Navy?
A career in the merchant navy is worth choosing for its combination of high salaries, tax benefits, structured career growth, global travel, and a work-leave balance that most shore-based professions cannot match. Here is why thousands of Indian students pursue merchant navy careers each year:
- High Earning Potential: Even at the entry-level Third Officer rank, salaries are significantly higher than most engineering or graduate roles in India. Senior officers on LNG and chemical tankers earn among the highest professional salaries in the country. For detailed rank-wise figures, see our merchant navy salary guide.
- Tax-Free Income: Indian seafarers serving on foreign-flagged ships for 183 or more days in a financial year qualify for NRI tax status. This means their ship salary is fully exempt from Indian income tax, a benefit unavailable in almost any other profession.
- Structured Work-Leave Cycle: Most merchant navy contracts last 3 to 6 months at sea, followed by an equivalent period of paid leave onshore. This 1:1 or 2:1 sea-to-leave ratio gives seafarers far more uninterrupted family and personal time than a standard 5-day office week provides.
- International Exposure: Merchant navy officers visit ports across Asia, Europe, the Americas, and the Middle East. This global travel and multicultural crew experience builds a professional profile that is valued both at sea and in shore-based maritime roles.
- Career Security: Over 90 percent of global trade moves by sea. The IMO estimates that around 1.89 million seafarers worldwide crew the global merchant fleet, with India being one of the top supplying nations. Demand for qualified DGS-certified officers remains consistently strong.
- Clear Progression Path: Unlike many careers where advancement depends on office politics, merchant navy promotions are governed by transparent DGS regulations: pass the certificate exam, complete the required sea time, and the next rank is yours.
Merchant Navy Departments: An Overview
Every merchant navy ship is organized into three departments: the Deck Department (navigation and cargo), the Engine Department (propulsion and machinery), and the Catering Department (crew welfare and food). Each department has its own officer hierarchy and rating (crew) ranks. Officers hold DGS Certificates of Competency (COC) or MEO (Marine Engineer Officer) certificates, while ratings hold endorsements under STCW regulations.
Within the Deck and Engine departments, personnel are divided into:
- Officers: Professionally certified individuals who hold command, watchkeeping, or specialized technical responsibility.
- Ratings: Trained crew members who carry out operational, maintenance, and support tasks under officer supervision.
Deck Department Ranks and Responsibilities
The Deck Department is headed by the Captain and manages navigation, cargo operations, safety equipment, and watchkeeping on the bridge. Deck officers hold COC certificates issued by DGS under STCW Convention guidelines. Here is a complete breakdown of every deck rank:
Captain (Master)
The Captain, formally called the Master, is the highest-ranking officer on any merchant vessel. The Captain holds a DGS COC Class I (Master, Foreign Going) certificate and has total legal command of the ship, crew, cargo, and voyage. Responsibilities include safe navigation in all weather conditions, compliance with IMO SOLAS (Safety of Life at Sea) regulations, port authority communications, crew management, cargo documentation, and emergency decision-making. The Captain is the sole authority onboard and is personally accountable for any incidents under international maritime law. No sailing direction from a company supersedes the Master’s professional judgement on safety.
Chief Officer (Chief Mate / First Officer)
The Chief Officer is the second-in-command onboard and the executive head of the deck department. The Chief Officer holds a DGS COC Class II (Chief Mate, Foreign Going) certificate. Key responsibilities include cargo planning and supervision, crew welfare and watches, maintenance of life-saving appliances (LSA) and fire-fighting appliances (FFA), deck crew management, and standing in for the Captain in their absence. Watchkeeping hours for the Chief Officer are typically 0400 to 0800 and 1600 to 2000 at sea. During port operations, the Chief Mate is often too occupied with cargo to take port watches.
Second Officer (Second Mate)
The Second Officer is the ship’s designated Medical Officer and Navigation Officer. The Second Officer holds a DGS COC Class II certificate and is primarily responsible for chart corrections and publications, passage planning, medical services onboard, and navigational watchkeeping between 0000 to 0400 and 1200 to 1600. Under STCW regulations, the Second Officer must hold a valid Medical First Aid at Sea (MFAS) certification in addition to standard watchkeeping endorsements.
Third Officer (Third Mate)
The Third Officer is the most junior officer rank in the deck department and is the first full COC-holder a cadet achieves. The Third Officer holds a DGS COC Class IV (Officer in Charge of a Navigational Watch) certificate, earned by passing the DGS written and oral competency exam after completing sea training. The Third Officer is responsible for all fire-fighting appliances (FFA) and life-saving appliances (LSA) on board, port documentation, bond store management, and watchkeeping from 0800 to 1200 and 2000 to 0000. Under STCW, the Third Officer must hold endorsements including PSSR, EFA, FPFF, PST, and AFF.
Deck Cadet
A deck cadet is a trainee officer undergoing approved sea service as part of a B.Sc Nautical Science program approved by DGS. Deck cadets assist the Officer on Watch (OOW), learn navigation equipment, participate in cargo operations, maintain the deck logbook, and undertake training on GMDSS, ECDIS, and bridge simulators under the supervision of the Chief Officer. Cadets must complete a minimum of 12 months approved sea time before becoming eligible to sit the DGS COC Class IV examination for the Third Officer rank.
Deck Ratings: Bosun, Able Seaman, Ordinary Seaman
Below the officer ranks, the deck crew (ratings) form the operational backbone of the ship’s external work. The Bosun (Boatswain) is the senior rating in the deck department and coordinates all deck crew work directly under the Chief Officer. Able Seamen (AB) hold an STCW-endorsed proficiency certificate and assist with mooring, anchor work, steering, cargo, and maintenance. Ordinary Seamen (OS) perform general cleaning, painting, rigging, and cargo support duties. The entry path for deck ratings is the GP (General Purpose) Rating course after Class 10, detailed further below.
Engine Department Ranks and Responsibilities
The Engine Department manages all propulsion machinery, auxiliary systems, fuel, and electrical systems on board and is led by the Chief Engineer, who holds a DGS MEO Class I certificate. Marine engineers are certified through the MEO (Marine Engineer Officer) competency examination system regulated by DGS. Below is a complete breakdown:
Chief Engineer
The Chief Engineer is the highest-ranking officer in the engine department and holds a DGS MEO Class I certificate. Responsibilities include overall management of the main propulsion system (main engine, gearbox, shafting), all auxiliary machinery (generators, pumps, compressors, purifiers), fuel and lubricant consumption, MARPOL compliance for pollution prevention from ship machinery, bunkering operations, and reporting to the company’s superintendent engineers. The Chief Engineer is also responsible for the Safe Manning requirements and technical budget of the vessel.
Second Engineer
The Second Engineer is the Chief Engineer’s direct deputy and the operational in-charge of the engine room during daily running hours. Holding a DGS MEO Class II certificate, the Second Engineer plans and supervises maintenance of all machinery, trains Engine Cadets and junior engineers, keeps the planned maintenance system (PMS) up to date, and manages the engine store. The Second Engineer’s leadership and troubleshooting ability directly determines engine room efficiency and crew morale.
Third Engineer
The Third Engineer holds a DGS MEO Class IV certificate and is typically responsible for the ship’s boilers, auxiliary engines, and all pump systems including emergency and bilge pumps. The Third Engineer is on watchkeeping duties and manages the provision reefer system, ship spares, and the fire pump. Exact machine allocations vary between shipping companies and are documented in the Company Safety Management System (SMS).
Fourth Engineer
The Fourth Engineer also holds a DGS MEO Class IV certificate and is typically responsible for purifiers and compressors on board. The Fourth Engineer reports to the Second Engineer, manages the main propulsion system under supervision, maintains the HVAC (heating, ventilation, and air conditioning) system, and is expected to provide basic medical aid as part of watchkeeping duties. Responsibilities may vary from vessel to vessel depending on the ship type and the company’s SMS.
Engine Cadet (Fifth Engineer)
The Engine Cadet, sometimes designated as Fifth Engineer on certain vessels, is a trainee marine engineer completing approved sea service under the guidance of the Second Engineer. Duties include taking soundings, conducting engine room rounds, performing document work, and learning maintenance tasks such as air compressor servicing, oil filter changes, and sewage plant operations. After completing the required sea time and passing the DGS MEO Class IV examination, the Engine Cadet is promoted to Fourth Engineer.
Electro-Technical Officer (ETO)
The Electro-Technical Officer (ETO) is one of the most important specialists onboard modern vessels. The ETO manages all electrical systems, automation, navigation electronics, cargo control computers, and the vessel’s UMS (Unmanned Machinery Space) automation systems. As ships become increasingly computerized and automated, the ETO role has grown substantially in scope and demand. ETOs enter the merchant navy through specialized ETO pre-sea courses approved by DGS, typically after completing a degree or diploma in electrical or electronics engineering.
Engine Ratings: Fitter, Motorman/Oiler, Wiper
Engine ratings work directly under the duty engineer on daily maintenance and operational tasks. The Fitter is a skilled tradeesperson responsible for assembly, fitting, and workshop repairs of mechanical components using welding and precision tools. The Motorman (also called Oiler) ensures all machinery is properly lubricated and assists the duty engineer during rounds. The Wiper is the entry-level engine rating responsible for cleaning engine spaces and machinery surfaces and typically progresses to Motorman with sea experience.
Catering and Support Department
The Catering Department ensures crew nutrition, accommodation hygiene, and shipboard welfare and is a small but essential department on every vessel. The size of the catering team depends on the ship type and crew complement. On large tankers and container ships, the catering staff may number 2 to 4 people.
The Chief Cook is the head of the catering department, responsible for preparing all crew meals, maintaining galley hygiene as per STCW standards, managing the food store, and coordinating with the Master on meal provisions. The Chief Cook’s role directly impacts crew morale and performance, since regular nutritious meals are critical to watchkeeping alertness at sea. Stewards serve meals, clean mess rooms and officer cabins, maintain grocery records, and assist the Chief Cook in provisioning paperwork. Trainee Cooks assist the Chief Cook in meal preparation and food store management.
GP Rating: The After-10th Entry Path
Students who have passed Class 10 can enter the merchant navy as GP (General Purpose) Ratings, a DGS-regulated pre-sea training program that leads to a career in either the Deck or Engine department without a degree requirement. GP Rating is one of the most popular entry paths into the merchant navy for students who do not meet the 12th PCM requirement for officer training.
The GP Rating course is 12 months long and approved by DGS. Eligibility requires passing Class 10 with at least 40 to 50 percent marks (standards may vary by institute) and meeting DGS medical fitness requirements including eyesight and hearing standards. After completing the GP Rating course and initial sea service, ratings progress through the following path:
- Trainee Ordinary Seaman (TOS): Entry point after GP Rating course completion; learns basic seamanship and engine room duties onboard.
- Ordinary Seaman (OS) / Wiper: After sea time accumulation; assigned maintenance, cleaning, and operational support duties.
- Able Seaman (AB) / Motorman: After passing STCW rating endorsement; performs mooring, anchoring, and steering duties (Deck) or machinery maintenance (Engine).
- Bosun / Fitter: Senior rating positions after several years of sea service and proficiency certificates.
Experienced ratings can also upgrade to officer rank by completing a DGS-approved upgrading course (such as the Navigational Watch Rating or Engine Watch Rating upgrade path) and appearing for COC or MEO competency exams. This makes the GP Rating path a genuinely upwardly mobile career route.
Also read: Scope for Women in Merchant Navy: Career and Job Opportunities
Merchant Navy Career Progression: The Promotion Ladder
Merchant navy promotions are not based on seniority alone but on a combination of minimum sea time in rank, passing DGS Certificate of Competency (COC) or MEO examinations, and completing mandatory STCW-required training courses. This transparent, regulation-driven system means that a committed officer can progress from Deck Cadet to Captain in approximately 12 to 15 years, or faster depending on the shipping company and vessel type.
Deck Department Promotion Ladder
| Rank | DGS Certificate Required | Minimum Sea Time in Previous Rank | Key Exams / Courses |
|---|---|---|---|
| Deck Cadet | None (under training) | 12 months approved sea service | B.Sc Nautical Science + STCW Basic Safety (PSSR, EFA, FPFF, PST) |
| Third Officer | COC Class IV (OOW, Foreign Going) | 6 to 12 months as 3rd Officer to attempt Class II | DGS COC Class IV written + oral exam; AFF, GMDSS GOC |
| Second Officer | COC Class II (Part 1 / 2nd Mate) | 12 months as 2nd Officer | DGS COC Class II Part 1 exam; Medical First Aid at Sea (MFAS) |
| Chief Officer | COC Class II (Chief Mate, Foreign Going) | 12 months as Chief Officer | DGS COC Class II Chief Mate exam; Leadership and Managerial Skills course (LAMS) |
| Captain / Master | COC Class I (Master, Foreign Going) | Command | DGS COC Class I Master exam; Ship Security Officer (SSO) course |
Engine Department Promotion Ladder
| Rank | DGS Certificate Required | Minimum Sea Time in Previous Rank | Key Exams / Courses |
|---|---|---|---|
| Engine Cadet / 5th Eng | None (under training) | 12 months approved sea service | GME or B.Tech Marine Engineering + STCW Basic Safety |
| Fourth Engineer | MEO Class IV | 12 months as 4th/3rd Engineer | DGS MEO Class IV written + oral exam |
| Third Engineer | MEO Class IV | 12 months as 3rd Engineer | MEO Class IV; Medical First Aid (Engine) |
| Second Engineer | MEO Class II | 12 months as 2nd Engineer | DGS MEO Class II exam; LAMS course |
| Chief Engineer | MEO Class I | Command of engine department | DGS MEO Class I exam; Ship Security Officer course |
All DGS competency examinations are conducted at DGS-designated examination centres across India (Mumbai, Chennai, Kolkata, Kochi, and Noida). Certificates are issued in compliance with STCW 2010 Manila Amendments and are recognized by flag states party to the International Convention on Standards of Training, Certification, and Watchkeeping (STCW).
How to Become a Merchant Navy Officer in India
To become a merchant navy officer in India, students must complete a DGS-approved pre-sea training program after Class 12 with PCM, pass mandatory STCW safety courses, complete on-board sea training, and clear the DGS Certificate of Competency examination. There are two primary officer career tracks:
Deck Officer Career Path (After 12th)
- Eligibility: Class 12 with Physics, Chemistry, and Mathematics (PCM); minimum 60 percent aggregate; age typically 17 to 25 years; DGS medical fitness including eyesight (6/6 corrected for deck officers).
- Course: B.Sc Nautical Science (3 years, DGS-approved institute such as Chitkara University). Alternatively, some students enter through a Pre-Sea Diploma in Nautical Science followed by a cadetship with a shipping company sponsor.
- Sea Training: Minimum 12 months approved cadetship onboard a merchant vessel.
- Exam: DGS COC Class IV (Officer in Charge of Navigational Watch) examination to qualify as Third Officer.
Marine Engineer Career Path (After 12th / B.Tech)
- Eligibility: Class 12 with PCM (minimum 60 percent) for GME (Graduate Marine Engineering) or B.Tech Mechanical/Marine Engineering for direct entry.
- Course: Graduate Marine Engineering (GME, 1 year post-B.Tech) or B.Tech Marine Engineering (4 years).
- Sea Training: Minimum 12 months engine room cadetship onboard.
- Exam: DGS MEO Class IV examination to qualify as Fourth Engineer.
ETO Career Path (After Diploma or B.Tech Electrical)
- Eligibility: Diploma or B.Tech in Electrical, Electronics, or Instrumentation Engineering.
- Course: DGS-approved ETO pre-sea training course (typically 6 to 12 months).
- Sea Training: Minimum 6 to 12 months at sea as trainee ETO.
- Exam: DGS ETO competency examination.
Merchant Navy Selection Process in India
The merchant navy selection process in India involves academic eligibility, an entrance exam, a DGS medical fitness test, institute admission, pre-sea training, and finally sea cadetship, all governed by DGS regulations under the Ministry of Ports, Shipping, and Waterways. Here is a step-by-step breakdown of how the process works:
- Step 1: Academic Eligibility Check: Confirm PCM 60 percent for officer tracks or Class 10 pass for GP Ratings. Age limits vary by course (typically 17 to 25 for pre-sea officer training).
- Step 2: Entrance Examination: Appear for IMU-CET (Indian Maritime University Common Entrance Test) for IMU-affiliated colleges. Several DGS-approved private institutes conduct their own admission tests. Some students secure direct sponsorship from shipping companies (Maersk, Anglo-Eastern, Synergy, and others) which may bypass the general IMU-CET route.
- Step 3: DGS Medical Examination: Undergo a mandatory medical fitness test conducted by a DGS-approved ENG1 doctor. Deck officer candidates must meet strict eyesight standards (6/6 with or without correction). Engine candidates have slightly relaxed eyesight norms.
- Step 4: Institute Admission and Pre-Sea Training: Join a DGS-approved institute for B.Sc Nautical Science, GME, ETO, or GP Rating course. Complete mandatory STCW basic safety training (PSSR, EFA, FPFF, PST) as part of the curriculum.
- Step 5: Cadetship / Sea Training: After completing the academic portion, join a merchant vessel as Deck Cadet or Engine Cadet for the required sea training period. This may be arranged through the institute, a shipping company sponsor, or self-arranged placement.
- Step 6: DGS Competency Examination: After completing required sea time, appear for the relevant DGS COC or MEO examination at an approved centre. Passing the exam and completing the endorsement process makes you a certified merchant navy officer.
Also read: Merchant Navy Salary in India: Complete Rank-Wise Pay Guide
Is Merchant Navy a Good Career?
Yes, merchant navy is a very good career, particularly for disciplined individuals who enjoy technical work, international exposure, and financial independence at an early age. Here is an objective look at both the benefits and the realities of life at sea:
Why Merchant Navy Is a Strong Career Choice
- Early Financial Independence: A Third Officer fresh out of college earns significantly more than most shore-based engineering graduates in their first year. Senior officers on tankers and LNG vessels earn salaries that compare favorably with corporate CXO-level compensation.
- Tax Advantages: Under Section 6 and Section 10(6)(viii) of the Income Tax Act, Indian seafarers on foreign-flagged ships qualifying as NRIs (183+ days outside India) pay zero income tax on their ship salary.
- Attractive Leave Structure: Three to four months of uninterrupted shore leave per year gives seafarers more real personal time than most office professionals enjoy.
- International Career Portability: DGS COC and MEO certificates under STCW are recognized worldwide. An Indian officer can work on vessels flagged under Panama, Marshall Islands, Bahamas, Liberia, and most other major flag states.
- Shore-Side Opportunities: Experienced seafarers transition into high-paying shore roles including marine surveyor, DPA (Designated Person Ashore), maritime consultant, port captain, harbor pilot, superintendent engineer, and maritime educator.
Challenges to Consider
- Extended Time Away from Family: Contracts of 4 to 6 months mean significant separation from family. This is manageable for many but requires careful personal planning.
- Physical and Mental Demands: Watchkeeping duties, exposure to weather, and isolated living conditions require strong physical fitness and mental resilience.
- Evolving Industry: The merchant navy is undergoing transformation through digitalization, autonomous vessel technologies, and alternative fuel (LNG, ammonia, hydrogen) requirements. Officers who stay current with technology and complete additional training certifications remain highly employable.
Overall, for a disciplined, science-qualified student willing to commit to the required training, the merchant navy career offers one of the strongest return-on-investment paths available after Class 12 in India.
B.Sc Nautical Science at Chitkara University
Chitkara University’s B.Sc Nautical Science program is a DGS-approved 3-year degree with a mandatory 12-month sea internship aboard merchant vessels, designed to produce competent deck officers ready for COC Class IV certification.
The curriculum blends theoretical foundations in navigation, meteorology, cargo handling, maritime law, and ship stability with hands-on simulator training in bridge procedures, ECDIS, GMDSS, and STCW safety courses. The 12-month onboard cadetship is integrated into the program structure, ensuring graduates complete the sea service requirement before appearing for the DGS COC Class IV examination.
Graduates of this program are eligible to pursue careers as Deck Cadets advancing to Third Officer, Second Officer, Chief Officer, and ultimately Captain. The program also prepares students for the IMU-CET pathway and includes STCW mandatory certifications as part of the curriculum, saving candidates additional time and cost.
Frequently Asked Questions
Is merchant navy a good career for Indians?
Yes, a career in the merchant navy is an excellent choice for Indians. It offers among the highest entry-level salaries in any field, tax-free income on foreign-flagged vessels for seafarers spending 183 or more days outside India, 3 to 4 months of paid leave per contract, and international exposure. India is among the world’s largest suppliers of maritime officers, and DGS-certified Indian seafarers are in high demand globally.
What is the highest post in the merchant navy?
The highest post in the merchant navy is the Captain, also called the Master. The Captain holds a DGS COC Class I (Master) certificate and has complete command over the vessel, crew, cargo, and navigation. In the engine department, the equivalent highest post is the Chief Engineer, who holds a MEO Class I certificate from DGS.
How to become a merchant navy officer after 12th?
To become a merchant navy officer after 12th, you need Physics, Chemistry, and Mathematics (PCM) with at least 60 percent marks. For deck officers, enroll in a B.Sc Nautical Science program (3 years) approved by the Directorate General of Shipping (DGS). For marine engineers, pursue a Graduate Marine Engineering (GME) course or B.Tech Marine Engineering. After completing the course and mandatory sea training, appear for DGS Certificate of Competency exams to qualify as a Third Officer or 4th Engineer.
After deck cadet, what is the next rank in the merchant navy?
After completing training as a deck cadet (minimum 12 months approved sea service), the next rank is Third Officer (also called Third Mate). To achieve this, cadets must pass the DGS Certificate of Competency (COC) Class IV examination, which includes both a written test and an oral exam before a DGS-approved examiner. The Third Officer is the first full-fledged officer rank on a merchant vessel.
How many ranks are there in the merchant navy?
A typical merchant navy ship has around 20 to 25 designated ranks spread across three departments: Deck, Engine, and Catering. The Deck Department has 5 officer ranks (Captain, Chief Officer, 2nd Officer, 3rd Officer, Deck Cadet) and 4 rating ranks (Bosun, Able Seaman, Ordinary Seaman, Trainee OS). The Engine Department has 6 officer ranks (Chief Engineer, 2nd Engineer, 3rd Engineer, 4th Engineer, Engine Cadet, ETO) and 3 rating ranks (Fitter, Motorman/Oiler, Wiper). The Catering Department typically has 2 to 3 ranks (Chief Cook, Steward, Trainee Cook).
What is the merchant navy selection process in India?
The merchant navy selection process in India typically involves: (1) Academic eligibility check (12th PCM with 60 percent for officer roles or 10th pass for ratings), (2) Entrance exam such as IMU-CET for IMU-affiliated colleges or direct admission tests for GME courses, (3) DGS-approved medical fitness examination to meet eyesight and physical standards, (4) Admission to a DGS-approved maritime institute, (5) Completion of pre-sea training including STCW basic safety courses, and (6) Cadetship or sea training on board a ship. Shipping companies also conduct sponsorship interviews for cadets before or during their training.
