1.1" (28 mm) Quad Mount on firing range
Note the spokeless trainer's wheel, the
sailor holding a spare clip and that the mounting holds eight ammunition
clips - two per gun. One of the problems with the design of this
quad mount can be easily seen in this photograph - the need for the first
loaders to work in close proximity to one another with little room for
error. Although I have nothing to support this, I strongly suspect
that the USN's design for the quad Bofors mounting, with its widely spaced
pair of twin guns allowing ample working space for the four first loaders,
was a direct consequence of the experience gained with the 1.1" (28 mm)
quad mount.
The guns in the background are 20
mm Oerlikons
1.1" (28 mm) Quad Mount on USS Pennsylvania
BB-38
USN Photograph courtesy of NavSource
Newly added 1.1" (28 mm) anti-aircraft
mount on USS Astoria CA-34 in July 1941
U.S. Navy photograph from NARA collection
19-LCM
Photograph courtesy of Brent Jones of
USS Astoria.org
1.1" (28 mm) anti-aircraft mounts on fantail
of USS Astoria CA-34 in July 1941
Note that Mark 44 Directors have not yet
been installed
U.S. Navy photograph from NARA collection
19-LCM
Photograph courtesy of Brent Jones of
USS Astoria.org
1.1" (28 mm) Projectiles - Mark 2 (left)
and Mark SD 1 (right)
Mark SD 1 was a Mark 1 projectile modified
for self-destruction by drilling a hole between the tracer and HE cavities
The Mark 2 used a self-destroying tracer,
as shown by the different shadings of the tracer element
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