Diploma in Nautical Science
Diploma in Nautical Science (DNS), often combined with a B.Sc in Applied Nautical Science, is a pre-sea training programme regulated by the Directorate General of Shipping (DG Shipping) and run at DG Shipping-approved maritime training institutes affiliated to the Indian Maritime University. It combines about one year of shore-based classroom and simulator training in navigation, seamanship and ship operations with mandatory sea time as a deck cadet on merchant ships, with the full pathway to becoming a navigating officer spanning around three years. It suits Class 12 science students with Physics, Chemistry and Mathematics who want a sea-going career, are medically fit by DG Shipping standards, and are ready for long periods away from home on board ship.
About Diploma in Nautical Science
Diploma in Nautical Science (DNS), often combined with a B.Sc in Applied Nautical Science, is a pre-sea training programme regulated by the Directorate General of Shipping (DG Shipping) and run at DG Shipping-approved maritime training institutes affiliated to the Indian Maritime University. It combines about one year of shore-based classroom and simulator training in navigation, seamanship and ship operations with mandatory sea time as a deck cadet on merchant ships, with the full pathway to becoming a navigating officer spanning around three years. It suits Class 12 science students with Physics, Chemistry and Mathematics who want a sea-going career, are medically fit by DG Shipping standards, and are ready for long periods away from home on board ship.
Why Choose Diploma in Nautical Science
A direct route to a navigating officer career
DNS is the recognised DG Shipping pathway from Class 12 into a career as a merchant navy deck officer, without a separate engineering or science degree first.
An international, sea-going career
Officers serve on merchant ships trading worldwide, which brings travel and exposure that most shore-based careers do not offer.
A structured rank progression
Deck officers move up a clearly defined ladder of Certificates of Competency, from Third Officer to Master Mariner, based on sea time and further exams.
Ongoing demand for Indian officers
India is one of the largest suppliers of seafarers to the global shipping industry, which keeps demand for qualified deck officers ongoing.
Detailed Syllabus (About 1 year of shore-based pre-sea training followed by roughly 18–24 months of mandatory sea time, with the full DNS-to-officer pathway spanning around 3 years)
Core Subjects
Elective Subjects
Eligibility Criteria
Basic Requirements
| Minimum Percentage | Pass in Class 12 with Physics, Chemistry and Mathematics (PCM) and English; DG Shipping and IMU-CET norms typically ask for 50–60% aggregate in PCM. |
| Mandatory Subjects | Physics, Chemistry, Mathematics, English |
| Entrance Exams | IMU-CET (Indian Maritime University Common Entrance Test) |
| Minimum Age | 17 years |
| Maximum Age | 25 years (as per the current IMU-CET notification; confirm the exact cut-off before applying) |
Admission Process
Qualify Class 12
Pass Class 12 with Physics, Chemistry, Mathematics and English from a recognised board, meeting the minimum percentage and age criteria.
Appear for IMU-CET
Register for and appear in the IMU Common Entrance Test under the DNS/B.Sc Nautical Science category.
Complete a pre-admission medical examination
Undergo a medical fitness examination with a DG Shipping-approved doctor, covering eyesight, colour vision and general fitness for sea service.
Counselling and institute allotment
Take part in counselling based on IMU-CET rank and select a DG Shipping-approved maritime training institute.
Admission confirmation
Complete document verification, pay the course fee and join the pre-sea training programme.
Required Documents
Important Notes
Estimated Fee Structure
| Government Institutions | ₹4,00,000 – ₹7,00,000 for the full pre-sea course (indicative) |
| Private Institutions | ₹7,00,000 – ₹12,00,000 for the full pre-sea course (indicative) |
Return on Investment
| Total Investment | ₹4 lakh – ₹12 lakh for the full pre-sea course, depending on a government or private institute |
| Average Starting Salary | ₹2.5–5 LPA as Deck Cadet, rising substantially after qualifying as an officer |
| Payback Period | 2–4 years from the start of sea service |
Figures are indicative; actual costs, sea time and pay vary by institute and shipping company, and are not a guarantee of placement or a sea berth.
Scholarship Opportunities
| Post-Matric Scholarship for SC/ST/OBC students | SC, ST or OBC students within the applicable income limit, applied for through the National Scholarship Portal or the relevant state portal. | Fees and a maintenance allowance; amounts set by the Centre and states |
Career Opportunities
Top Recruiters
Typical Salary Packages
| Deck Cadet (training phase) | Avg: ₹3.5 LPA | Range: ₹2.5–5 LPA |
| Third Officer | Avg: ₹12 LPA | Range: ₹9–16 LPA |
| Second Officer | Avg: ₹18 LPA | Range: ₹14–22 LPA |
| Chief Officer | Avg: ₹26 LPA | Range: ₹20–32 LPA |
| Master Mariner / Captain | Avg: ₹38 LPA | Range: ₹30–50 LPA |
* These are indicative figures based on industry patterns; actual pay varies by rank, sea time, vessel type, flag state and shipping company, and is often paid in US dollars.
Career Pathway
Entry Level (Deck Cadet)
0–2 yearsAfter the pre-sea course, cadets join ships to complete mandatory sea time, working under the supervision of senior officers and maintaining a Training Record Book.
Junior Officer
2–5 yearsAfter qualifying the Second Mate (Foreign-Going) exam, officers serve as Third and then Second Officer, handling navigation and cargo watchkeeping duties.
Senior Officer
5–10 yearsWith further sea time and the First Mate exam, officers become Chief Officer, responsible for cargo operations and the deck department.
Command
10+ yearsAfter the Master (Foreign-Going) exam, officers can command a ship as Captain, or move into shore-based roles such as marine piloting or surveying.