Okay...
There are three ships: Ship A, Ship B, and Ship C.
Ship A, is the ship you're on now, coming from... let's say Rome, and your destination is France. During the way, Ship A gets hit by a storm, and gets damaged. So, you decide to repair the ship, by using materials, which was different from the materials you used to build ship A in the first place.
But, now call this repaired ship "Ship B". Soon, you arrive at France, in Ship B.
You look to your left, and see a sailor, which has the exact ship as Ship A. The sailor's ship is Ship C.
Sooo, my question is: is Ship A the same as Ship B, or, is Ship A the same as Ship C.
Make sense now? :3