Thank you for your kind message.  I hope you enjoy making a really positive contribution to Wikipedia.  While I think you're broadly right in the Echo and Enterprise articles that the names should be "Persian Gulf", there are plenty of occasions where this might not be so clear cut.  Bearing in mind that Wikipedia is a truly international encyclopaedia, The English Channel is certainly right, but then so again is The Channel, a direct translation of La Manche, the French name of the same waterway.  Context is important, but so is consensus.  I can't recommend any form of edit war, and it's worth bearing in mind that consensus essential.  If you lose your argument, well, there are over 3,000,000 articles in Wkipedia, nearly every single one of which could use some form of improvement!  

On another subject, may I recommend creating an account?  For the benefits, see Wikipedia:Why create an account?.  All the best,