I suspect there is some confusion between the "Coastal Skipper" *course* for which you receive a course completion certificate much like dayskipper, and the "YachtMaster Coastal" certificate which I believe used to be called "Coastal Skipper" before it was rebranded (10-ish years ago??) and I think in the 80s (Pete7 please confirm :-) it might have been called "Yachtmaster Inshore". The "Yachtmaster Coastal" certificate is a certificate of competence obtained through a yachtmaster exam but with lower pre-requisites and less rigorous pass criteria than Yachtmaster Offshore
. You don't have to do the Coastal Skipper course to do the Yachtmaster Coastal exam and you don't get a Yachtmaster Coastal certificate just by doing the Coastal Skipper course.
It's not completely clear who is talking about what on this thread.
Pre-requisites seem slightly different between the two and I think it confuses everyone (well, me for sure)...