In this paper, a condensed version of an address to the Annual Assembly Meeting of the Radio Technical Commission for Marine Services held at Boston on 31 March 1964, where world-wide shore-based harbour radar surveillance and guidance systems were discussed, the Harbour Master of Southampton reviews some of the more recent developments of the Port Operation and Information Service at Southampton. Developments in the port itself are first briefly described and then some implications for Southampton of the Rochdale Report and the Harbours Bill are examined. After an account of some improvements in radar equipment used in the port, some new ideas now being investigated are described.