Presented at a meeting of the Solent Branch of the Institute held, by courtesy of the Director, at the College of Nautical Studies, Warsash, on 21 September 1978.

Put your trust in God and the Admiralty Chart! Every one of nearly four million charts issued each year by the Hydrographic Department is as up to date as possible on the day on which it leaves our premises; nevertheless we are increasingly conscious that far too many of the charts are no longer adequate for the uses to which they are now being put.