Hi Georg..
with regard to the tailfin marker - which supermod/mod ar you using.
If you have a look at the '
theModInDetail' PDF file in the
RealNav_ReadMe2.zip
archive file. I'm using NYGM V2.5 mod.
I edited the
command_eng(de).cfg Navigation_Officer section.
Here I commented out all nav tools except one or two.
also in the
menu_1024_768.ini
I edited/commented out the
Waypoint tool to prevent course line drawing.
If you're using GWX or other mods you might find different items in these files. Maybe you can put up/link these 2 files for me to look at.
The game GMT clock keeps its own time. The local clock you'll notice always adjusts it hour when crossing the 7.5, 22.5, 37.5, ..... meridians. This is the one method of determining you Longitude position.
I've noticed when you leave base on a mission the GMT clock is locked on the nearest Longitude (EG: 15E for Kiel ) If you play the whole mission without loading a saved game GMT time will always be on Kiel which make Longitude and the Almanac OK - you must just adjust for the hour advance.
I had it occasionaly jump to Real Life GMT, but after my las reload I found the clock locked on Kiel. I'm still testing this with the almanac - so far so good.