Please help identify this RAF Projectile Pusher Hoist

[oktato]

Hi,

Can anyone identify this RAF cannon "PUSHER HOIST"?

It is illustrated on a large RAF weapon training poster.

The only information on the poster is the title: "AD/G. 4. PUSHER HOIST"

If possible, I'd like to know what weapon it relates to and any information on how the Pusher Hoist was used.

Thanks for any leads!

Gary

 

[kahu1]

Looks like a loading system for a naval gun(AD; Admiralty Drawing?),can't think of any RAF weapons that would use it or the illustrated APC rounds.

 

[oktato]

Yes! That makes much more sense!
Any ideas on the calibre of the projectiles shown?
Thanks a lot for your help.
Gary

 

[kahu1]

Anything in the 6inch-plus range i would expect.