From: Hex 82,170
I recently bought a reprint of the 1918 edition of "Weyers Flottentaschenbuch" (Pocket guide to the World's war fleets - still well worth having in the contemporary editions, lists all ships of all navies with photos and line drawings). Now I'm certain that the data about the navies participating in WWI is somewhat suspect, due to propaganda/fog of war, but this was an official reference for navy officers.
There is a section in the back listing the shipyard infrastructure of those countries that had a shipbuilding industry, and in the section about Japan - Navy yards there appear the following entries:
Port Arthur: two drydocks - repair shipyard
Pescadores: one drydock, one floating dock - ship repair facility
This is information from 1918 or earlier, and those docks were not marked as suitable for major warships, but in WitP stock, neither Port Arthur nor Pescadores have repair yards. I should guess that, if those entries are correct, Pescadores would rate 5-10 repair yards, and Port Arthur 10-20 repair yards. Does AE have those facilities?
I will have to check, but I have yet to spend much time reviewing the location of naval shipyards. It is on the list though, so any useful information is welcome.