What is CDC (Continuous Discharge Certificate)? | Importance & Requirements

A Continuous Discharge Certificate (CDC) is an essential document for seafarers, serving as a record of their service on board ships. This certificate is issued by maritime authorities, such as the Directorate General of Shipping (DGS) in India, the Maritime and Coastguard Agency (MCA) in the UK, and the U.S. Coast Guard (USCG) in the United States. These authorities oversee the certification process and ensure that seafarers meet international maritime standards.

The CDC has several types, each catering to different categories of seafarers. The most common types include:

1. Seafarer’s CDC: This is the standard certificate issued to crew members working on merchant ships. It records the seafarer’s sea service and is used as proof of their professional experience.
2. Officer’s CDC: This is issued to officers serving in higher ranks, such as deck officers, engine officers, and radio officers. It often includes additional details about the officer’s qualifications, training, and certifications.
3. Fishing CDC: This is specifically for individuals working on fishing vessels, documenting their sea service and complying with maritime labor regulations.
4. Recreational CDC: For those employed on non-commercial, recreational yachts and vessels, ensuring that they are recognized as legitimate crew members.

The CDC is not just an identity document but also a proof of service that is necessary for seafarers to legally work on international voyages, ensuring compliance with maritime labor laws, international regulations, and safety standards.

Onboard a ship, the Continuous Discharge Certificate (CDC) is used as a vital record for crew members. It serves as both an identity document and a proof of service, which is often requested during routine inspections by port authorities or shipping companies.

The CDC is essential for tracking the seafarer’s working hours and ensuring compliance with international labor standards, such as those set by the International Labour Organization (ILO). The ship’s management uses it to verify crew members’ experience, qualifications, and eligibility for specific duties. Additionally, the CDC helps in maintaining accurate records of sea time for promotions, certification renewals, and other career milestones.