Very nice, Keith. Those are great alterations.
I have found another - more explicit - picture of the deck shelter. This one is not in Hurley's book. It comes from 'The Shackleton Voyages', which can be purchased very cheaply on Amazon. This book deals with all of Shackleton's expeditions, so: Discovery, Nimrod, Endurance and Quest.
Notice the hull is still white in this picture. It was painted black in Buenos Aires to stand out against the ice. The suspension of the (life)boats was also changed considerably at a later stage, from in-board to out-board..
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