Some things dont make sense
Ok lately ive been flipping throught the manga agin, and as I was reading throughout it I realized something. If the grand line only has one island at a time, and that the Holy City and the marines headqurters are on the grand line. Then doesnt that mean that Luffy has to spend time on those two WG islands? To get the magnetic flow of the islland to the next?
Also if marine ships can cross the calm zone with seastone, then why cant they get to raftel? it should be no problem to cross the zone and reach it. And dont tell me that they cant find the island due to the magnetic current, after all we all know that raftel is approximately near the end of the grand line on the other side of the mountain, and since the grand line is so thin it shouldn't be hard to find it.
Plus since seastone is undoubtedly very hard, harder than steel since Zoro couldnt cut it ,then i cant really see how the sea could destroy the marine ships if luffys crew is gonna make it to the island even with the special wood
And lastly when franky woke up he saw a ship covered in metal which confuses me because no ship ever seen is covered with metal or even has the amount of metal that was seen aboard the ship, so what sort of ship was it and where the heck was it
Considering the fact that Franky was hit off the tracks and manged to get back to water 7 then how did no one see that ship if it was so close to the tracks and people where constantly going back and forth across the tracks?