An Admiralty committee recommended that each of the three manning ports in the United Kingdom—Chatham, Plymouth, and Portsmouth—have an identical memorial of unmistakable naval form, an obelisk, that would serve as a leading mark for shipping. Sir Robert Lorimer, who had already done a lot of work for the Commission, designed the memorials, and Henry Poole did the sculpture. On October 15, 1924, the Duke of York (the future George VI) unveiled the Portsmouth Naval Memorial.