My ancestors were McCarthy's from County Cork. Michael H McCarthy was my great great grandfather and family history says they were boat builders in Ireland
Greetings to you John to IrelandXO
John, McCarthy is a very popular name here in Ireland and especially here in County Cork.
To be of any help - you would need to tell us a little more ie address etc Mom and Dad's name and approx age.
I came across a book on Shipbuilding - here is the link to it. http://www.marciadalton.net/wp-content/uploads/2018/02/Shipbuilding-in-…;
kind regards Phyl