Can a yacht switch between Commercial Vessel and Pleasure Yacht Registration on a regular basis?

Yes. However, a yacht can only be issued with one Certificate of Registry at a time. In order for the yacht to be registered as a commercial vessel it must be in possession of valid certificates appropriate to its size. For yachts over 500 GT, this includes, but is not limited to, a Safety Management Certificate, an International Ship Security Certificate, a Continuous Synopsis Record, Maritime Labour Certificate (when applicable) and a Minimum Safe Manning Document. These Certificates must remain valid for the duration of the period that the yacht remains registered as a commercial vessel. The Certificate of Registry which is not in current use must be returned to Cayman but can then be re-issued on application.