After the Second World War and its consequent loss of life, the decision was made to expand the three memorials and so the Chatham Naval Memorial was created from the 'Chatham Obelisk' and was given a surround designed by Sir Edward Maufe which contains 10,098 additional names from the later conflict. The surround is also made of Portland Stone, with bronze plaques. It has two pavilions; north and south which look out towards Chatham. Along the surround are four Portland Stone statues of sailors. The Extension was unveiled by the Duke of Edinburgh on 15 October 1952
