Several sources including Wikivoyage, Seat 61, and Lonely Planet tell me that there's s short, quick ferry from China to the Taiwanese island of Matsu.
Apparently this ferry leaves from a part of, or neighbouring town of, Fuzhou in Fujian province called "Mawei" (马尾).
But none of these sources tell me the address of the ferry terminal and I can't seem to pinpoint it using either Google Maps or OpenStreetMap.
On the maps the whole area along the coast is lined with boats and the only spot marked as being a port is a bit inland.
I've missed ferries in other countries by arriving a bit late before so I'd like to be sure of the exact spot I need to get to in advance.