Erm this may a very foolish question but i arrived at Kiel after first mission, the gold anchor appeared, i ignored it, wanted to see the harbor a bit. went further in, getting close to the sub pens, now the gold anchor is gone. backed up closer to the mouth of the estuary where the 'home base' icon is on the map. still no gold anchor. how do I dock?
when i dive in the harbor i still get the 'submerged' icon, so the icons are there. just no gold anchor.
date is 5 september just after midnight
edit, after loading the save i made inside Kiel harbor i toured back to the estuary mouth and the anchor popped up again just off the place on the map where is says Kiel (home port icon). So fixed, but weird that i couldn't sail all the way back into the bunker