Before December 2012 Column E in both (owners and YRN) registries used to be REG, the registraion date for each new owner of a given boat. Now that column is gone from the owners list and seems to be some useless (nefarious secret code?) number in the YRN list.
That was a pretty useful column for figuring out who the current owner was of each boat. Without that column what is the point of putting the lists on this website? If a boat has had more than one owner, we cannot tell who the current owner is.