Chartering Abroad 

If you are chartering a vessel abroad, you will generally need a certificate of competence. As the vessel is unlikely to be British flagged, it is necessary to ask the charter company for advice on what certificate of competence will be acceptable. You should ensure with them that this will also be acceptable if you are asked for proof of competence by the local authorities. 

There is no international requirement for another country to accept a UK qualification in place of their own - except for under certain conditions full STCW qualifications (for working aboard large commercial vessels).Sadly as the RYA scheme is UK based, rather than having an international force behind it, we cannot force the Governments of other countries to accept our certificates as proof of the holder's competence. In general the boat you are looking to charter abroad won't be UK registered. It will therefore be up to the country in question's maritime authority to advise whether or not your RYA certificate is acceptable.