Sorry for needing to reupload, but I just needed to revise some bugs in the design...

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 it's 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. Two different robots load both the Shell and powder into the gun, which allows for greater strength that what even the strongest man can do. Nonetheless, if said robots are malfunctioning through a power cut, the gun can always be reloaded manually, thanks to the presence of human-powered backup generators.

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 20 rounds of Boom 50s.

Note: This is actually the same bomb-launching Cannon that appeared earlier in one of the "Ultra Machines", Specifically as one of the many weapons of the the UM-03 Dakka

Also, try launching the countermeasures (chaff) at the same time as firing the bombs.