General Remarks:

Region 1: German NW coast, notorious, by some the German Bight is called the Cry Bay. There is some truth in it. But sail with common sense: avoid time pressure, listen to several weatherreports, consider wind direction and desired route (recommended: via Helgoland) including tides and do not hesitate if the weather is kind enough, to proceed at night. Allright, easy to say because after all, the fact remains that this coastal lee shore with little refuge, strong tides, and tricky seas, especially in the Elbe estuary, makes the German Bight a challenging stretch of water

Region 2: German NE coast, is a more suttle experience than the German Bight. But don't underestimate any sea going passage. The Bay of Kiel is a wide and open stretch. One advantage is that in this region there are no serious tidal heights and that the only current is caused by the wind or through a narrow passage. Therefore be aware of passages close to shore and protruding points. Sailing from Lübeck along the East German coast, literally and figuratively a neglected area, is fascinating. Development of the area is however  progressing at a fast pace and this includes marinas, services and hospitality services.

Map scales? The larger the scale, the smaller the area.  1:1,000,000. is a small scale. 1:7.500 is a large scale. On a map with a scale of 1:50,000 is 1cm = 50,000 cm = 500 meter