
The indomitable members of the Harbour Board took stock of their position, and in 1860 extensive planning commenced for the upgrading of Mossel Bay Harbour to meet the growing import and export needs of the Eastern Cape.
Fifty years after the lighthouse was erected, an explosive type fog signal was installed on 15 May 1914. This unit was replaced on 15 September 1931 by an electrically operated fog signal, and in 1944 a diaphone fog signal was introduced. The diaphone was replaced by a nautophone on 24 July 1989, and the character of two blasts every 60 seconds was changed to four blasts every 60 seconds.