According to the UK MCA, seafarers that are working on UK-flagged vessels and hold a certificate of competency (COC), do not need to take any action.

Similarly, seafarers that are working on a vessel that is flagged as either an EU country, Norway, Iceland or Liechtenstein, can continue working until their certificate of equivalent competency expires.

Trained seafarers

Concerning trained seafarers in the EU, Norway, Iceland and Liechtenstein, it is added that they can work on UK-flagged vessels.