What Is a CDC? Continuous Discharge Certificate Explained

A CDC (Continuous Discharge Certificate) is one of the most important documents for any seafarer. Without a valid CDC, you cannot legally sail, join a ship, or sign on as crew.

This blog explains what a CDC is, its importance, eligibility, documents required, and the step-by-step CDC application process in India.

What Is a CDC (Continuous Discharge Certificate)?

A Continuous Discharge Certificate (CDC) is an official identity and service record issued by DG Shipping, Government of India. It records:

• Seafarer identity

• Rank and capacity

• Sea service details

• Ship joining & sign-off records

CDC full form, what is CDC in Merchant Navy, CDC certificate India

Why Is CDC Mandatory?

CDC is mandatory for:

• Merchant Navy jobs

• Cruise ship jobs

• Tanker vessels

• Offshore & foreign ships

Without CDC:

• No ship joining

• No sea service record

• No rank promotion

Who Can Apply for CDC in India?

Eligibility includes:

• Minimum age: 18 years

• STCW + STSDSD basic courses completed

• Medical fitness certificate

• Indian nationality

CDC eligibility, how to get CDC in India

Documents Required for CDC Application

• Passport

• Aadhaar card

• PAN card

• STCW course certificates

• INDOS number

• Medical fitness certificate

• Passport-size photographs

CDC documents required, CDC application process

Step-by-Step CDC Application Process

Step 1 – Apply for INDOS Number

Register on the DG Shipping portal to get your INDOS number.

Step 2 – Complete STCW Courses

Enroll in DG Shipping–approved STCW courses.

Step 3 – Medical Examination

Complete DG Shipping-approved medical tests.

Step 4 – CDC Application Submission

Submit documents through a DG Shipping–approved institute.

Step 5 – CDC Issuance

CDC is issued by DG Shipping and delivered after verification.

CDC apply online, DG Shipping CDC process

CDC Validity & Renewal

• CDC validity: 10 years

• Renewal required before expiry

• Lost CDC must be re-issued via DG Shipping

Common CDC Application Mistakes

• Non-approved STCW courses

• Incorrect documents

• Fake agents

• Incomplete medical reports

Always apply through a DG Shipping–approved maritime institute.

Conclusion

The CDC (Continuous Discharge Certificate) is your official license to work at sea. From ship joining to promotions, CDC is mandatory at every stage of a maritime career. By completing DG Shipping–approved courses and applying correctly, you can avoid delays and start your sea career smoothly.

Institutes like Anvay Maritime Institute guide students through STCW training, CDC application, and ship-joining readiness.