To end the story of my U-mark: (
)
Was back in my current career, playing with real nav mod and 90% realism (just external view enable) when i attacked a nice convoy...
Submerged right in the middle of convoy, i destroyed a Cimmaron tanker and i decided to take a close look with my external camera to the tanker sinking...
You know what??
My U-mark was there!!
I broke the engagement because out of ammos, and leave the place.
Next diving, my U-mark was gone again!
Just to illustrate the unbelievable mechanics of computing
