Crew
What is a CoC?Certificate of competency
A certificate of competency (CoC) is the qualification that allows a seafarer to serve in a specific officer or engineer role, issued by a flag administration under STCW.
On yachts, examples include yacht master and officer of the watch certificates for deck officers, and engineering certificates for engineers. The certificate states the role, the size or power of vessel it covers, and any limits.
A flag state may also require an endorsement before an officer can serve on a vessel under its flag. Expired or missing certificates can stop a yacht from sailing, which is why they are tracked with reminders well before expiry.
Related terms
See your own yacht in Nauticare this week
Sign up and explore every module for 7 days with a template yacht and sample data. Prefer a guided tour? Book a 30-minute call.
No credit card. Leave demo mode and choose a plan whenever you’re ready.