How does GP call shots from his ship when his ship was destroyed?

He had previously stolen Swain's personal war galley, "The Leviathan" sometime during his illustrious career as the salty scourge of Bildgewater. It is believed he is now using that ship after the events of Burning Tides.

"The Dead Pool" was destroyed, so he stole a ship from the fleet of Swain and uses that ship instead. The new ship is called "The Leviathan"

Who says the cannons are on a ship? He has an army of poros off screen who fire cannons when he tells them to. He pays them with oranges.

I wonder what updated Swain will have to say to that?