USA Twin 20 mm/70 AA
Note Mark 14 Gyro gunsight
The mounting is probably a Mark 24
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British 20 mm/70 on Mark 5 Pedestal Mount
This weapon is at the Exposition of Navy
Museum, Gdynia
Photograph copyrighted by Michal Kopacz
British version of the Oerlikon 20 mm/70
Note the eyepiece/ring sighting system,
this weapon depended entirely upon the gunner's shooting ability
Sketch from B.R. 224/45
Mark 15 Quad Mount
USN Photograph
20 mm Oerlikon Diagram
USN Projectiles of World War II
Diagonal Stripes represents the
body and body walls, small dots represent the tracer elements, dense dots
represent the incendiary elements, other dots represent explosive (HE)
burster elements. Explosive, incendiary and tracer elements were
loaded in increments, as shown in the above sketches.