Temporal replacement arrival paradox
I've linked my first attempt. This is a newer version...
A ship undergoes gradual replacement of its parts each month while observers and observer records are periodically replaced. The ship is defined as “the same ship” only when an observer concludes it is “new,” and defined as “new” only when an observer concludes it is “the same.” The ship is guaranteed to arrive at its destination only while classified as “new.” However, any observer identifying the ship as “new” thereby reclassifies it as “the same,” preventing the condition required for arrival, while identifying it as “the same” reclassifies it as “new” without establishing the condition necessary for arrival.
Question:
Does it arrive?