A 1‑year residential pre‑sea programme approved by DG Shipping that prepares you to become a Deck Officer in the Merchant Navy. Learn about eligibility, IMU‑CET, sponsorship, top colleges, career progression, salary, and FAQs.
Diploma in Nautical Science (DNS) is a one‑year pre‑sea maritime training programme that prepares students for a career as a Deck Officer in the Merchant Navy.
After successfully completing the pre‑sea programme, obtaining the required certifications, and joining a shipping company as a Deck Cadet, candidates undergo structured onboard training (sea service). After completing the prescribed sea service, training requirements, and competency examinations under the applicable regulations, they become eligible to progress through the deck officer ranks.
DNS is one of the most popular pathways for Class 12 (PCM) students who wish to pursue a career in navigation, ship operations, cargo handling, bridge watchkeeping, and eventually command a merchant vessel as a Captain (Master).
Complete 10+2 with Physics, Chemistry and Mathematics.
One‑year pre‑sea training at a DG Shipping‑approved institute.
Structured 18‑month onboard training (SSTP) on merchant vessels.
After obtaining Second Mate (FG) CoC and gaining sea time.
Head of Deck Department; responsible for cargo, stability and crew management.
Highest rank – overall command of the vessel.
Promotion depends on completion of prescribed sea service, approved training, and competency examinations in accordance with DG Shipping requirements.
The Deck Department is responsible for the safe navigation, cargo operations, stability, mooring operations, maintenance of deck equipment, bridge watchkeeping, and overall operational management of a merchant vessel. As a Deck Officer, your responsibilities increase with each promotion, ultimately leading to the position of Captain (Master), who has overall command of the ship.
Choosing the right maritime institute is just as important as choosing the right course. Before taking admission, always verify the institute's current approval status, understand its sponsorship opportunities, review its training facilities, and research its placement support. Avoid relying solely on advertisements or salary claims when making your decision.
Before applying for the Diploma in Nautical Science (DNS) programme, candidates should carefully review the educational, medical and age criteria prescribed by DG Shipping, Indian Maritime University (where applicable), the sponsoring company and the respective maritime institute.
| Requirement | Eligibility |
|---|---|
| Educational Qualification | 10+2 (Senior Secondary) with Physics, Chemistry & Mathematics (PCM) |
| Minimum PCM Marks | 60% Aggregate |
| English Marks | Minimum 50% in English in either Class 10 or Class 12 |
| Maximum Age* | 25 Years (General Category) |
| Medical Fitness | Must be declared medically fit by a DG Shipping‑approved Medical Examiner |
| Department | Deck Department |
| Course Duration | 1 Year Pre‑Sea Training |
*Age relaxations may apply as per the applicable admission notification.
Candidates must have successfully completed 10+2 (Senior Secondary) or its equivalent from a recognised board with Physics, Chemistry, Mathematics (PCM) and English.
Age limits are calculated as of August 1st of the academic admission year (subject to change as per IMU notification):
Candidates should always verify the latest official admission notification.
Admissions through Indian maritime institutes are primarily open to Indian citizens. NRI and foreign national candidates may have different eligibility as per institute policies.
Medical fitness is mandatory. Every candidate must undergo a medical examination conducted by a DG Shipping‑approved Medical Examiner. The final decision rests with the examiner.
DG Shipping rules require:
Yes, conditionally. DG Shipping allows LASIK/PRK/SMILE, provided:
Before taking admission, always verify the institute's current DG Shipping approval status, sponsorship opportunities, placement support, training facilities, simulators, fee structure, and hostel/campus facilities.
For most Class 12 (PCM) students, the journey towards joining the Merchant Navy through the Diploma in Nautical Science (DNS) programme begins with understanding IMU‑CET and Sponsorship. These are two of the most important stages in the DNS admission process.
What is IMU‑CET? – A national‑level entrance examination conducted annually by the Indian Maritime University (IMU) for admission to various undergraduate maritime programmes. For DNS, qualifying IMU‑CET is mandatory.
Is IMU‑CET Compulsory? – Yes. As per DG Shipping, qualifying IMU‑CET and obtaining a valid rank is required for admission to DNS at all approved MTIs in India.
Who Conducts? – Indian Maritime University (IMU), a Central University under the Ministry of Ports, Shipping and Waterways.
| Particular | Details |
|---|---|
| Exam Mode | Computer‑Based Test (Online CBT) |
| Question Type | Multiple Choice Questions (MCQs) |
| Medium | English |
| Duration | 3 Hours (180 Minutes) |
| Total Questions | 200 Questions |
| Total Marks | 200 Marks |
| Marking | +1 for correct, –0.25 for incorrect, 0 for unanswered |
| Subject | Questions |
|---|---|
| Physics | 50 |
| Mathematics | 50 |
| English | 40 |
| General Aptitude & GK | 40 (20 Aptitude + 20 GK) |
| Chemistry | 20 |
| Total | 200 |
Syllabus Overview: Based on Class 11‑12 PCM, English, Aptitude and GK. Recommended resources: NCERT textbooks, previous IMU‑CET papers, and mock tests.
With 200 questions in 180 minutes, accuracy matters more than speed. Avoid blind guessing due to negative marking. Practise full‑length mock tests under timed conditions.
What is Sponsorship? – An official selection by a registered shipping company or authorised RPSL agency, confirming that the candidate has been selected for the company's training pathway and will undergo the Structured Shipboard Training Programme (SSTP) after DNS.
Is Sponsorship Compulsory? – Yes. For the One‑Year DNS programme, sponsorship is mandatory. Without a valid sponsorship letter, admission cannot be confirmed.
Important: Never reverse the process – you must secure sponsorship before your DNS batch commences. Self‑sponsored admissions are illegal under DG Shipping rules.
Choosing the right DNS institute is critical. Evaluate based on DG Shipping approval, sponsorship tie‑ups, placement record, infrastructure, simulators, faculty, and alumni network.
| Institute | Placement Strength | Simulator Tech | Campus Discipline | Setup Type |
|---|---|---|---|---|
| AEMA Karjat | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | Captive (Anglo‑Eastern) |
| SIMS Lonavala | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | Captive (ESM) |
| GEMA Lonavala | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | Captive (Great Eastern) |
| T.S. Rahaman | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ | Open Independent |
| IMI Noida | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ | Open Independent |
| HIMT Chennai | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐ | Open Independent |
| AMET University | ⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐ | Maritime University |
The best DNS college is not the one with the most advertisements – it is the one that commands respect from global ship managers and insists on pre‑sponsorship protocols. Your goal should be to clear the sponsorship exam of a blue‑chip company first, and let that company direct you to its preferred training institute.
After completing the One‑Year DNS programme, candidates join a merchant vessel as a Deck Cadet and begin their Structured Shipboard Training Programme (SSTP). Upon completing the prescribed onboard training and sea service, they become eligible for the Second Mate (Foreign Going) Certificate of Competency (CoC) examination.
After obtaining the Second Mate (FG) CoC, shipping companies generally appoint officers as Third Officer (or Second Officer, depending on company policy). With further sea service and higher CoC examinations, officers progress to Chief Officer and eventually Master (Captain).
Undergoes practical onboard training – learns navigation, bridge watchkeeping, seamanship, cargo operations under senior officers.
Usually first officer rank after Second Mate CoC. Responsible for LSA, FFA, medical locker, safety equipment, and bridge watchkeeping.
Responsible for passage planning, navigational charts, publications, voyage planning, and bridge watchkeeping.
Head of Deck Department – cargo operations, ship stability, deck maintenance, crew management, assisting Master.
Highest rank – responsible for safe navigation, crew welfare, cargo, legal compliance, and overall command.
| Rank | Approximate Time* |
|---|---|
| Deck Cadet | 18 months (Structured Shipboard Training) |
| Third Officer / Second Officer | After obtaining Second Mate (FG) CoC |
| Chief Officer | Typically 7‑10 years from joining |
| Master (Captain) | Typically 10‑15 years from joining |
*Indicative – varies based on performance, sea time availability, examination success, and company promotions.
Your promotion is earned, not automatic. Completing sea service on time, maintaining excellent onboard performance, clearing CoC examinations promptly, and continuously upgrading skills can significantly accelerate your journey from Deck Cadet to Captain.
A career built through DNS offers incredible earning potential, global exposure, and financial autonomy. However, maritime wages are tied to international markets and paid only while onboard. Your annual income depends on the number of months sailed.
| Rank | Average Monthly Salary (USD) | Estimated Monthly INR* |
|---|---|---|
| Deck Cadet | $300 – $800 | ₹28,500 – ₹76,000 |
| Third Officer | $2,500 – $4,200 | ₹2.3 Lakh – ₹4.0 Lakh |
| Second Officer | $3,500 – $5,800 | ₹3.3 Lakh – ₹5.5 Lakh |
| Chief Officer | $6,500 – $10,500 | ₹6.1 Lakh – ₹10.0 Lakh |
| Master (Captain) | $9,500 – $16,000+ | ₹9.0 Lakh – ₹15.2+ Lakh |
*INR values depend on exchange rates (~₹95/USD). Salaries paid strictly for onboard contract duration.
Do not chase short‑term cash jumps. Focus on joining a company with a strong safety culture, consistent vessel turnarounds, and fast promotion tracks to Chief Officer and Master. The financial scale will follow your professional competence.
Responsibilities expand exponentially with rank. A Deck Cadet learns through observation, while a Captain bears absolute accountability for the vessel, crew, cargo, and environment.
To work as a Deck Officer, you must obtain several certifications throughout your career, as mandated by DG Shipping and the STCW Convention.
| Certificate | When Required | Issued By |
|---|---|---|
| Second Mate (FG) CoC | After 18 months Deck Cadet sea service | MMD / DG Shipping |
| Chief Mate (FG) CoC | After required sea service and training | MMD / DG Shipping |
| Master (FG) CoC | After management‑level sea service and examinations | MMD / DG Shipping |
Keep your documents updated at all times. Shipping companies and port state control will not permit sign‑on if any certification is expired. Set calendar reminders 90 days before every expiry to avoid last‑minute delays.
The Diploma in Nautical Science (DNS) is a specialised 1‑year pre‑sea training programme approved by the Directorate General of Shipping (DGS). It serves as a direct, accelerated operational pathway to qualifying as a navigating Deck Officer in the international Merchant Navy.
Yes, absolutely. Under DGS training directives, no approved maritime academy can legally admit a student into a DNS batch without a valid, qualifying rank from the Indian Maritime University Common Entrance Test (IMU‑CET).
Yes. Unlike the 3‑year B.Sc. Nautical Science track, the 1‑year DNS pathway requires you to secure a formal Sponsorship Letter from a DGS‑approved shipping company or pass an institute‑assisted corporate selection drive before your campus batch commences. This ensures your 18‑month onboard training slot is guaranteed before you pay your academic fees.
Yes, provided your vision meets baseline parameters. DG Shipping rules dictate that your unaided (uncorrected) distant vision must be at least 6/6 in your better eye and 6/9 in your other eye at the time of your official seafarer medical examination. If your refractive error is mild (within ±2.5 Dioptres) and your eyes naturally test at the 6/6 and 6/9 thresholds without external aids, you are fully eligible. Complete Colour Blindness (tested via Ishihara charts) is an absolute, non‑negotiable disqualification.
Yes, conditionally. DG Shipping allows corrective eye surgeries (including LASIK, PRK, and SMILE), provided a minimum waiting/healing period of 6 months has passed between the date of the surgery and your official seafarer medical exam. Your post‑operative vision must be a stable 6/6 and 6/9 with zero complications like night‑glare, halos, or severe corneal thinning. Note that certain premier shipping lines maintain corporate internal policies that are stricter than the baseline government minimums.
Yes, absolutely. The maritime industry heavily promotes diversity, and female candidates who clear the standard physical, academic, and entrance parameters are highly sought after by top‑tier global shipping companies.
To qualify for the DNS entrance path, you must pass your 10+2 (or equivalent) examination with:
(SC/ST candidates receive a 5% waiver on the aggregate PCM score, but the English minimum remains fixed.)
Age limits are calculated as of August 1st of the academic admission year:
You will sign corporate articles of agreement and board a commercial vessel as a Deck Cadet to finish your mandatory 18‑month Structured Shipboard Training Programme (SSTP). During this time, you will receive a monthly stipend while documenting your practical learning tasks inside your Training Record Book.
Yes, without exception. The DNS pathway is an internationally recognised operational foundation. By accumulating qualifying sea‑time blocks, completing advanced tactical simulator modules, and clearing your Second Mate, Chief Mate, and Master Certificate of Competency (CoC) examinations, you can achieve the rank of Master (Captain) on any modern merchant ship.
Yes. Because India is a prominent white‑listed signatory to the IMO's STCW Convention, a CoC issued by the DG Shipping (India) is highly respected worldwide. It allows you to operate vessels under diverse international flag states.
Yes. Once you successfully finish your 1‑year campus phase, complete your 18 months of onboard sea service, and pass your Second Mate (Foreign Going) CoC examinations, Indian Maritime University (IMU) formally awards you a B.Sc. (Applied Nautical Science) degree.
Important: Always cross‑verify critical deadlines, eligibility criteria, and medical standards directly with the official IMU Admission Prospectus and the current DG Shipping portal before applying. Maritime regulations and admission policies are subject to change.
