A does not equal B

So, though the two ships are numerically identical,they are not qualitatively identical.Thus, A does not equal B.But what happens
when we consider this twist?What if, as each piece of the original ship was cast off,somebody collected them all,and rebuilt the entire original ship?When it was finished, undeniably
two physical ships would exist:the one that's docked in Athens,
and the one in some guy's backyard.Each could lay claim to the title,The Ship of Theseus,but only would could actually be the real thing.So which one is it,and more importantly, what does this have to do with you?