Water depth sea's to and in ports not deep enought

[Mac D]

I noticed during the attement to creat a scenario, and using al lot of ships that the depth in ports (Rostock, Cuxhaven , and the Elbe aren't deep enough for the vessels that you would normal see in these place's.
Especially the Elbe, which goes from 30+ metres depth to just 1 in a route that is used by every vessel going and leaving Hamburg.

If possible, could this be improved  ?
Or is there a way a user like myself can doe it himself ?

[gulredrel]

 

I already reported this. It's all along the coast and even between islands where the water isn't deep enough for ship placement and routes. This will be hopefully fixed in the upcoming iterations of the map.