Artillery Piece (Fallout 4)

The artillery piece is a constructible settlement item featured in Fallout 4.

Characteristics
The artillery piece is a mortar capable of high precision, high accuracy, and highly-damaging fire. However, has a maximum range of approximately 5 squares as viewed on the Pip-Boy's world map. Artillery strikes can be called down by throwing an artillery smoke grenade within range of a placed cannon. Having more manned pieces allows for more hits during a single salvo: each piece affords five shots.

Behind the scenes
Artillery seems to be heavily based on the 12-inch coast defense mortar, which was in service from the late 19th to the mid 20th centuries.

Bugs
Sometimes when calling in a strike, the sound of the mortar coming in can be heard, but no explosion will follow.