Ship Bridge 2 has a graphic line showing that it requires Steel Smelting but it already requires Research Lab II which cannot be researched without Steel Smelting. Steel Smelting is also not listed on the Requires section on the right.

Ship Bridge 2 has a graphic line showing that it requires Steel Smelting but it already requires Research Lab II which cannot be researched without Steel Smelting. Steel Smelting is also not listed on the Requires section on the right.
