Grice Sails On Theseus's Ship

Theseus’ ship: After the hero Theseus accomplished his mission to sail to Crete to kill the Minotaur, his ship (Ship 1) was put on display in Athens. As the time went by, its original planks and other parts were replaced one by one with new materials until one day all of its parts were new, with none of its original parts remaining. Do we want to say that the completely rebuilt ship (Ship 2) is the same as the original or that it is a different ship? The case is further complicated. If all the original materials were kept and eventually used to construct a ship (Ship 3), would this ship be the same as the original? This example has inspired much discussion concerning the problems of identity and individuation. “To be something later is to be its closest continuer. Let us apply this view to one traditional puzzle about identity over time: the puzzle of the ship of Theseus.” Nozick, Philosophical Explanation