Emplacements are weapon systems which are constructed on a Construction Yard. As opposed to vehicles, Emplacements cannot be moved on their own and have to be shipped, and should not be confused with field guns (which are pushed).
All Emplacements get their health quadrupled in an emplacement trench as well as an increased rotation speed (2x).
They are invisible during the night, just like infantry. They can also be hidden by being placed inside large bushes, but are revealed to people within 10m. Only their firing effects (smoke and flashes from the barrel) will betray their presence. This only works if they are not packaged.
They suffer from natural decay, like structures.
You cannot package enemy emplacements. The only way to steal one is to pick it up with a crane while it's already packaged and to submit it to a Storage Depot or Seaport.
List of Emplacements
Like all shippables emplacements can be submitted into a Storage Depot or Seaport but they can only be submitted to the public stockpile, not private reserve ones. Shippable Crates of emplacements produced at a Mass Production Factory can be privately stored however.