It´s a tide harbour though, so you easily  fall dry (not easily but surely !) and should be prepared for it.
It´s a good base for cruising the North Sea though.
Used by fishermen in former times, but now it´s a marina. 

Image taken from the ladder of a fire engine, app. 35m hight. 
You can see the habrour and the "Braake" the little river that runs into the harbour.