Is the Admiral King still existing meaning that the Kingdom technically still exists. If so where does the Kingdom exist? Because there’s no throne room in Silverhold and there’s no reference to the King Admiral other than through the Admiral title… and there’s just no way that Silverhold is the kingdom island.
Apparently the gravy used to be a kingdom but grew very big, so it became an organisation similar to the AG in AA. Silverhold is just their main outpost in the Bronze Sea. The main kingdom or base, likely where the King Admiral (probably named that way as they are technically the king of a kingdom) lives, is in a later sea.
The main government base is never in the first few seas.
In AA, the AG headquarters was planned to be in the 5th sea, so i imagine the GN HQ is either in the 4th or 5th area of the War Seas.
There is an NPC that mentions it. Its the blonde lady at the side deck of Palo Town next to the Fishmonger, on the deck next to a boat where a Deckhand occasionally spawns.
She says that Palo Town is sworn under GN’s protection, and has been that way since before they were even called the Grand Navy.
The administration desk at Silverhold also gives a brief summary of the GN’s founding.
About GN’s main base would be, its most likely beyond the 3rd Sea, where players are high levelled enough to get Ancient stuff.
Corsair Country, a territory from a coalition of pirates, declared war against the GN, and this is taking place at the far south of the War Seas. Steleus, a powerful mage, will be looking for Ancient Magic Scrolls there, meaning that its also the place where Mages can start getting Ancient Magic. Thats pretty far in-game.
This also suggests that yes, War Seas isnt gonna be like Seven Seas and will be linear. Further south, the further the progression. All the other kingdoms are south of Bronze Sea.