The implementation of
Temporary and Preliminary Notices to Mariners
 in Electronic Navigational Charts (ENCs)

Full details of new Temporary (T) and Preliminary (P) Notices are issued monthly in  section II of South African Notices to Mariners publication.

A summary of those T & P Notices in force, as at the date of release of  the latest Monthly Notices to Mariners publication, as well as a summary of those T & P Notices which have been cancelled during the past month, are also given in Section I of the Notices booklet.

All South African ENCs are maintained up to date for T& P Notices currently in force by means of Updates (ERs) released for the ENCs affected.

Once the T&P is cancelled, another update or in some cases, a New Edition of the ENC, will be issued  to reflect the current situation.