Ship cover for the Admiral (1) class barbette ship HMS Collingwood (1882). The documentation includes a detailed appreciation of the relative merits and disadvantages of the barbette and turret arrangements as they stood in 1880, stability calculations for the new design, statements of hull dimensions, weights of hull and stores/equipment carried, paperwork on preliminary design proposals, engine machinery requirements, a precís of the design history and considerations affecting it (eg French designs), allocated crew complement, coal endurance, allocated weapons and ammunition and steam trial reports. Later members of the Admiral class receive increasingly frequent mention in the latter half of the cover, generally in papers relating to weights, stability and proposed reconstructions/alterations for the entire class circa 1898. The documents commence in September 1879 during the latter part of the design phase and end in February 1904, by which time the ship was in reserve.