Only recently there was a blockage at the lock in Brunsbüttel:
Water sports enthusiasts must be prepared for restrictions and use alternative mooring options. According to current BfS the closure is clearly marked: The entrance to the berth has been blocked with a floating fender on which an illuminated sign A.18 is mounted. This internationally recognised navigation sign clearly signals the prohibition of passage and mooring for all pleasure craft.
The berth for traditional vessels, also known as the Felsenkeller alternative berth, is available as an alternative for affected pleasure boaters. This berth has been kept free especially for pleasure craft and can be used during the closure of the regular berth at the Große Nordschleuse. The alternative berth offers pleasure boaters the opportunity to moor safely and continue or begin their journey on the Kiel Canal.
Read also: The ultimate NOK guide for sailors