Chartering in Spain - Sailing Credentials

Greetings All;

I am looking to charter in Spain and the issue of sailing licenses and credentials is coming up.

I am looking to charter a 43' yacht and I have the US based certifications from Boatwise: Safety , Coastal Navigation, and twin engine boat piloting. I have owned my own 37' boat for the past 10 years.

I have gotten one owner to agree to my certifications to charter his boat. Is this sufficient to guarantee that the Spanish coast guard will accept those credentials?

Any insight is greatly appreciated.