EXHIBIT #11

5-INCH ANTI-AIRCRAFT GUN USA

The 5-inch mount Mk 39 is a single, enclosed, base-ring type mount for one 5-inch 54-caliber gun. The mount is operated by manual drive, or power-driven in local or remote control. The mount was installed on aircraft carriers and auxiliary ships.

Our example doesn’t have the outside protective shield/housing, and so all of its features can be seen. This is one of 18 that were installed on Midway-class carriers in the 1940s. This one was specifically on the USS Franklin D. Roosevelt, the only Midway-class carrier to carry 5-inch 54-caliber guns that was scrapped on the east coast of the USA.

The gun is a cylindrical, monoblock, radially expanded steel forging, bored, rifled, and chambered. It is designed for semi-fixed ammunition and for cold assembly in a breech housing. Its operation is semi-automatic in either of two alternate methods: single-round fire, or rapid automatic fire. Either way, the recoil of the gun was powerful enough to knock around any sailors who weren’t secured inside the housing.

DATA

Weight: 73,900 to 82,375 lbs

Elevation: 85+ degrees

Depression: -10 degrees

Muzzle velocity: 2,500+ feet per second

Max range at 45 degrees elevation: 25,183 yds.

Max altitude at 85 degrees elevation: 45,557 ft. (this meant it could reach all WW2 era aircraft and many Korean War era aircraft as well)

BAM!!!