I assume these are for U Boot since normal ships would reach to the Yellow Sea. This one is in used condition, they try to remove the cross but it is very well visible.
The item "Ww2 German Kriegsmarine U Boot Seekarte Nautical charts Yellow Sea Gelbes Meer" is in sale since Monday, December 2, 2019. This item is in the category "Collectibles\Militaria\WW II (1939-45)\Original Period Items\Germany\Paper Items, Newspapers". The seller is "guntherprien47" and is located in Puurs. This item can be shipped worldwide.