In the map.properties file, placing the following line should cause the sea zone names of a map to be displayed:
However, it has no effect. Making this variable false doesn't change things, or leaving out any reference to it. I can't find any way to cause the sea zone names to be displayed.
Also, placing this line:
actually causes the land territory names to NOT be displayed. They are displayed if you don't reference this variable at all in the file.