During the Second World War both masts were used to carry radar aerials and the number of yards decreased as radio and daylight signalling lamps replaced flag signalling for communication.
Ngexesha lemfazwe yesibini yelizwe zombini iimasti zasetyenziswa ukuphatha ii-eriyali zesixhobo sokubonisa inqwelo-moya kunye nenani lemiqulu lehla njengonomathotholo neempawu zezikhanyisi zasemini zabekwa endaweni yeempawu zeflegi ukuze kubekho uqhagamshelwano.