http://users.bigpond.net.au/Shackleton/

Of course you have probably seen the line drawings on this site and want something more detailed, but I thought I'd mention them anyway.

I grew up in Northern Ireland and the Shackletons which were stationed at Ballykelly used to train right over our farm, in fact they used one of our fields as a target area, and used to fly over our house at very low level, then do a steep left bank, - the Mark 3 version was quite maneuverable, with vapour trails (vortex) coming from the wingtips as it turned ( no doubt caused by our moist air!.

We had all three versions of the Shackleton flying around our place, plus the odd Lancaster visiting from Canada, also the Lockheed Neptune made an appearance probably also from Canada.

The constant growling noise of the Griffon engines on the Shackleton was part of my early life, and I thought that it was normal part of life everywhere!

I believe that the planes that I watched would have been the same ones you watched, as I had heard that they were all sold to South Africa. - Please correct me if I'm wrong.

EDIT - sorry, I duplicated someone elses contribution in my haste! .

Someone mentioned that the Shackleton was based on the Lancaster airframe, - I think the Lincoln was derived from the Lancaster, and the Shackleton was loosely based on the Lincoln.