Another example illustrated. Here is the OPS room... or more like a corner. I just finished out piecing U-boat, convoy, task force and airbase symbols.
A while back I also covered the map with transparent plastic sheets, so that I could draw lines and circles. Air base range rings and convoy routes would be awesome, but it increases the workload and they change over time... In the paper sheet below I had BdU orders for the patrol, like the assigned grid.
Now considering if I could do something differently. For example compiling some sort of intel/planning/moon stage/weather package on the kneeboard before every patrol would be awesome. I think it would be feasable to add other U-boat symbols to the map, whenever they report, so it helps with the big picture. Even though it is just flavour.