A harbour cruise at the port of Husum, Germany ended with a stuck vessel in the mud.  The 19 meter long passenger ship Insel Poel became stranded when the tide went out.   Passengers and crew who wanted to go ashore were able to leave the ship using ropes tied to the stern of the vessel.   The Insel Poel is expected to float free with the next high tide.  No reports of  injuries or pollution being released.