I have a 40 Morgan Ketch, no it is not centerboard . She is full keel 4'2"
heavy well made boat. We bought ours 10years ago and have slowly completely rebuilt her.
Of course along the way we have sailed her up and down the Bay.
Yes with proper equipment you can single hand this boat.
if you have the 4-107 westerbeke plan on replacing it, not enough power
I put a 50hp Betamarine in ours and does a great job
S\/V Lady Catherine II