A CHANGE OF CENTURY AND A PROFOUND CHANGE IN ROYAL NAVAL PERSONNEL
DATE LINE - 25TH December 1902
See also this related page
Scroll down until you see the pictures of HMS Cordelia, her masts and an argument for and against, and very shortly afterwards you will see a title called "But first we need to ascertain why a mast in a shore establishment" then read through this page until you come to a new title called "Measuring worth - Purchasing Power of British Pound".