nope he doesn't because when he saved luffy he was swimming in the water.

Sengoku the fleet admiral, couldn't have gotten to that position being weak, white beard also mentioned that he was once an admiral. If you want to gues his ability type it on this thread.

I believe that he'll either be an Ancient Zoan type or Logia type. If he was a logia type i think that he'd be a water man.