Sorry for needing to reupload, but I just needed to revise some bugs in the design, and match up to the scale of the cannon part 📏 ...

The Loud Lincoln Ultra-Heavy Artillery Cannon is a successor to the 16 inch guns seen on the mighty battleships U.S.S. Missouri, Wisconsin, New Jersey, and other Iowa-Class Vessels. However, there are several modernizations to set it apart from its ancestors.For one the Loud Lincoln's barrel is smoothbored, as opposed to rifled, not unlike the Main Gun of the M1A2 Abrams MBT. This means the rounds do not spin in flight, and instead rely on aerodynamic forces to ensure flight stability. This is necessary for certain shells such as kinetic energy penetrators, which tend to veer wildly when fired out of a rifled barrel, and need to fly straight in order to effectively pierce armor. This also allows for more versatility, such as firing cluster munitions like a giant shotgun. A favorite of many however, are thermobaric rounds, which use the oxygen from the atmosphere to augment the blast wave of the explosion on impact, thus causing more destruction and damage than traditional explosives. Another difference Is that it utilizes a fully automated loading system, which not only reduces the manpower required drastically, but also provides a significant increase in rate of fire to increase efficiency. Nonetheless, if said loading system is malfunctioning through a power cut, the gun can always be reloaded manually.

This weapon is truly a piece d'resistance, with firepower that no other artillery system can compete with, and should become a newfound staple for navies, and armies, worldwide.

VTOL for Traverse, Trim for Elevation. To Fire, air to ground mode, then simply launch weapon. This gun holds 30 rounds of Boom 50s.