STSDSD Full Form Facts Every Merchant Navy Aspirant Must Know

Quick answer: STSDSD stands for Security Training for Seafarers with Designated Security Duties. It is a mandatory 2-day DG Shipping-approved STCW course for seafarers assigned specific security roles on board ships. The certificate holds lifetime validity and costs between ₹1,400 and ₹5,500 in India.

If you are planning a career in the Merchant Navy, you will come across a string of short forms that look confusing at first: BST, PST, PSCRB, and STSDSD. Each one stands for a course you may need before you step on a ship. This guide focuses on one of them — STSDSD — and explains exactly what it means, who needs it, and how you complete it.

By the end, you will know the STSDSD full form, the eligibility rules, the fee range, the syllabus, and how the exit exam works. We have written this for students searching for a career at sea and for 12th-pass aspirants taking their first steps toward becoming a seafarer.

What is the STSDSD full form?

STSDSD stands for Security Training for Seafarers with Designated Security Duties.

In plain terms, this is a short safety-and-security course required for any seafarer who is given a specific security job on board a ship. Modern vessels need crew members who can spot threats, handle security equipment, and follow set procedures during emergencies. The STSDSD course trains you to do exactly that.

It is a basic STCW course, which means it follows international standards set under the STCW Convention (Standards of Training, Certification and Watchkeeping for Seafarers). In India, the course is approved and regulated by the Directorate General of Shipping (DG Shipping).

Takeaway: STSDSD is the security training every seafarer with designated security duties must complete before sailing.

What is the STSDSD course in the Merchant Navy?

The STSDSD course is a 2-day training programme that prepares seafarers to carry out security duties on board. Its purpose is simple — keep the crew, the cargo, and the ship safe from security threats such as piracy, stowaways, and unauthorised access.

Once you join the Merchant Navy as a deck cadet, engine cadet, or rating, you will be assigned roles during security drills. The STSDSD certificate proves you have the training to handle those roles. Most shipping companies will not let you sail without it, which is why aspirants complete it early in their journey.

Here is where it fits in your overall path:

• You finish your pre-sea training (such as DNS, B.Sc. Nautical Science, or B.Tech Marine Engineering).
• You complete your STCW safety courses, including STSDSD.
• You join a ship as a trainee and perform your designated duties.

If you are still deciding which pre-sea route to take, our guide on BSc Nautical Science 2026 and B.Tech Marine Engineering breaks down each option in detail.

Takeaway: STSDSD is a mandatory security course that lets you legally perform security duties on a ship.

STSDSD course details at a glance

Here is a quick summary of everything you need to know about the course.

Takeaway: STSDSD is short, affordable, and valid for life — making it one of the easiest STCW courses to finish.

Who is eligible for the STSDSD course?

You must meet a few simple requirements before you can join. The good news is that the eligibility bar is low, so most aspirants qualify with ease.

1. Age: You must be at least 18 years old.
2. Education: You need to have passed 10th class (matriculation) as a minimum.
3. Medical fitness: You must be medically fit as per IMO standards, with a fitness certificate from a DG Shipping-approved doctor. Your vision and hearing must meet the required standards.
4. Identity proof: You need a valid passport or national identity document.
5. No criminal record: Some institutes may ask for a police clearance certificate if you have any record of an offence.

Takeaway: If you are 18, 10th-pass, and medically fit, you already meet the core eligibility for STSDSD.

What documents do you need for the STSDSD course?

Keep these documents ready before you enrol to avoid delays:

• INDoS number (Indian National Database of Seafarers ID)
• Valid medical certificate from a DG Shipping-approved doctor
• A valid passport

If you have not applied for your INDoS number yet, do it early — it is a basic requirement for nearly every Merchant Navy course and job.

Takeaway: An INDoS number, a medical certificate, and a passport are the three must-have documents.

What does the STSDSD syllabus cover?

The course gives you the knowledge and skills to handle security duties on board. The training is practical and focuses on real situations you may face at sea.

The STSDSD syllabus covers:

• Maritime security policies and procedures
• Security responsibilities of crew members and officers
• Ship Security Assessment and how to spot vulnerabilities
• Operating and maintaining security equipment
• Identifying, recognising, and responding to security threats
• Security measures for different threat levels
• Emergency preparedness, drills, and security exercises
• Security administration, documentation, and compliance
• Risk assessment and reporting of security incidents
• Piracy awareness and safety measures in high-risk areas

Each topic builds toward one goal — making sure you can act correctly when a real security situation arises.

Takeaway: The syllabus is built around practical security skills, from spotting threats to following the right procedures.

How does the STSDSD exit exam work?

After the 2-day training, you must clear the STSDSD exit exam to earn your certificate. The format is straightforward.

The questions test both theory and practice. Expect topics such as maritime security policies, crew security duties, ship security assessments, handling security equipment, and responding to threats and emergencies.

To prepare well, practise previous-year questions and take mock tests before exam day. A little practice goes a long way, since the pass mark is only 50%.

Takeaway: The exit exam is short and needs 50% to pass — steady practice makes it easy to clear.

How does STSDSD e-learning work?

DG Shipping now requires an e-learning module before classroom training. You complete this part online, at your own pace, before you attend the institute.

Here is how the full process works, step by step:

1. Start the e-learning: Visit the DG Shipping e-learning portal and enrol in the STSDSD module. You log in with face verification.
2. Complete the study hours: Finish a minimum of 6 study hours and attempt the assessment exam (50% to pass).
3. Attend classroom training: Once you pass the e-learning, you become eligible for the 2-day training at a DG Shipping-approved Maritime Training Institute (MTI).
4. Take the exit exam: After classroom training, sit the exit exam on the DG Shipping website.
5. Download your certificate: The MTI generates your certificate, which you can download through the INDoS CoP Checker on the DG Shipping website.

Takeaway: You must clear the online e-learning module first, then attend training, then pass the exit exam.

How much does the STSDSD course cost?

The STSDSD course fee in India ranges from ₹1,400 to ₹5,500. The exact amount depends on the institute, the city, and whether the fee includes accommodation.

Here are some sample fees from approved institutes to give you a realistic idea:

Prices change often, so always confirm the latest fee with the institute before you book.

Takeaway: Budget around ₹1,400 to ₹5,500, and compare a few institutes before enrolling.

What is the validity of the STSDSD certificate?

The STSDSD certificate has lifetime validity. Once you pass, you do not need to renew it, unless DG Shipping revokes it or replaces it with newer requirements.

This is good news for aspirants. Unlike some courses that need revalidation every five years, STSDSD is a one-time effort that stays with you for your entire career.

Takeaway: Pass once and you are set for life — no renewal needed.

The STSDSD course is approved and regulated by the Directorate General of Shipping (DG Shipping), ensuring it meets national maritime training standards.

Why STSDSD matters for your Merchant Navy career

A career at sea rewards those who plan well. The STSDSD certificate is a small but essential piece of that plan. Without it, most shipping companies will not let you join a vessel where you carry security duties.

Completing your STCW courses early shows recruiters that you are serious and ready. It also removes one more hurdle between you and your first contract. The smartest aspirants finish these courses alongside their pre-sea training, so they are fully job-ready when sponsorship opportunities arrive.

At Skills Station, we guide students through every stage of this journey — from IMU-CET and DNS preparation to sponsorship exams and interviews. With small batches of 25 students and mentors who know the industry inside out, we make sure you never feel lost about what to do next. Our alumni now sail with top companies such as Anglo Eastern, TORM Tankers, and Synergy.

If you are unsure about your next step, book a free consultation with our team. Seats in each batch are limited, so reach out early to secure your place.

Frequently Asked Questions

What is the full form of STSDSD?

STSDSD stands for Security Training for Seafarers with Designated Security Duties. It is a mandatory STCW security course for seafarers assigned security duties on board ships.

Is the STSDSD course mandatory for the Merchant Navy?

Yes. STSDSD is mandatory for any seafarer who is given designated security duties on board. Most shipping companies require it before you can sail.

How long is the STSDSD course?

The STSDSD course runs for 2 days, though some institutes offer it over 2.5 days. You must also complete a minimum of 6 hours of online e-learning before classroom training.

How much does the STSDSD course cost in India?

The STSDSD course fee ranges from ₹1,400 to ₹5,500, depending on the institute, location, and whether accommodation is included.

What is the validity of the STSDSD certificate?

The STSDSD certificate is valid for a lifetime. You do not need to renew it unless DG Shipping revokes or replaces it with newer requirements.

What is the eligibility for the STSDSD course?

You must be at least 18 years old, have passed 10th class, be medically fit as per IMO standards, and hold a valid INDoS number and passport.

How many questions are in the STSDSD exit exam?

The exit exam has 30 multiple-choice questions to be completed in 30 minutes. You need 15 marks (50%) to pass, and all questions are compulsory.

Who needs to do the STSDSD course?

Any seafarer assigned specific security responsibilities on a ship needs STSDSD — this includes deck cadets, engine cadets, and ratings across most Merchant Navy roles.