Broadsider (Fallout 4)

The Broadsider is a unique weapon $$

Gameplay
An unusual heavy weapon mixing 18th-century ordnance with 23rd-century technology. The main body consists of a small old-fashioned naval cannon strapped to a makeshift rig with metal rivets and thick ropes. This rig allows it to be carried around with both hands easily and includes a hinge allowing the cannon to be angled vertically for easy reloading. It fires explosive cannonballs via an electronic trigger taped to the back handle.

The Broadsider's base damage is affected by the Heavy Gunner perk.

Locations
Rewarded by Ironsides during the quest Last Voyage of the U.S.S. Constitution. Siding with the scavengers instead makes this weapon unobtainable.