[Drawing of arrangement of pumps, pipes &c of ship 'Diamond' / Admiralty (& Sheerness Dockyard). 1875. 1 sheet (on roll with others), line drawing, part with wash, scale 1/4" : 1'. Bears also lengthy 'Explanation' re Downton's pumps, lift pumps and flooding arrangements. See also inv. no. 1998-787 (MSR 59/1-5)]