 She was modified at Chatham Dockyard for use as a target ship between 6 December 1920 and 8 April 1921 . The ship was rewired for radio control and stripped ; the 12 @-@ inch turrets remained aboard , but all of her guns and their equipment were removed , as were her torpedo equipment , flying deck , sea cabins , main derrick and boat equipment , lower conning tower , masts and yards , most of her crew amenities , and other unnecessary equipment . Unnecessary hatches , coamings , scuttles , and lifts were removed and plated over , and she was ballasted differently than she had been as a battleship . It was not intended to sink her , so she was assigned a crew of 153 to maintain and operate her when she was not under fire . 
