RedactedNarrative: Milwaukee Police Boat 1595, Boat 2 conducted a boat stop on Boat 1 for a slow no wake violation in the Outer Harbor of Milwaukee just outside of Discovery World.  Boat 1 and Boat 2 were moored together by a bow line and a stern line.  During the boat stop, an unknown third boat drove by Boat 1 and Boat 2 creating a wake.  When the wake hit Boat 2 and Boat 1 the bow line connecting the two boats came undone.  The bows of both boats separated and the sterns of both boats turned into each other.  The swim platform of Boat 1 and the steel tow guard of Boat 2 collided together damaging the swim platform.  The cause of the accident was an improperly affixed line.