RedactedNarrative: Owner of vessel had taken his vessel out the previous day and upon return gave the keys to a Marina dockworker who was in charge of removing vessels from the harbor and placing them in their dry dock berths.  The next day the vessel was found abandoned floating in the harbor without any anchor or dock lines attached.  A local fisherman found and towed the vessel to where it is regularly kept in dry-dock.  Video surveillance showed a male and female boarding the vessel and departing from the marina.  Marina personnel identified the operator to be one of their co-workers and his girlfriend.  Once operator was advised of his Miranda rights he admitted to taking the vessel and striking a red buoy and damaging the vessel.  He brought the vessel back to the marina and cast it adrift to make the appearance it was abandoned.  Operator was charged for larceny of a vessel.