*  03 September 2021 The August 2021 Edition of Monthly Notices  to Mariners  and updated Cumulative List Of South African Notices To Mariners are now available.
*  10 May 2021 SEABED 2030 project information available under Hydro News.

The South African National Hydrographer's Message in response to COVID-19

 

“The outbreaks of the Coronavirus (COVID-19) pandemic has had the world scrambling to “flatten the curve” and administer vaccines to slow down the spread of this disease.  South Africa has not escaped the reach of this pandemic.

 

During any mandated “lockdown period”, the South African Navy Hydrographic Office (SANHO) will remain open for business as an essential service to the Republic. In an effort to protect our staff, we may enter into a rotating watch system ensuring that all functions remain capacitated at all times. 

 

We will be doing everything possible to minimise the impact of service delivery to you our valued clients and stakeholders.

 

On behalf of the SANHO team, I wish you, your team and families all the very best in these trying times.  Please stay safe and keep well.”

 

For more information, news and regulations regarding the South African Government's fight against COVID-19, please follow the link to www.sacoronavirus.co.za 


Navigation Messages Currently in Force.

Summary

Complete Set of Messages

 Last updated on

27/09/2021

NB. This information is only updated during office hours 0730 -1600 Mon - Fri.

2021 Series

117   South Atlantic Ocean - SE Sector - Gough Island - Shoal Reported.
118   Indian Ocean - SW Sector - Mozambique Channel - Drilling Structure
.
161   Indian Ocean - SW Sector - Mozambique - Lighthouse unlit.
162   South Atlantic Ocean - NE Sector - Angola - Mooring Buoys and FPSOs.
163   Indian Ocean - SW Sector - Madagascar - Mahajanga Harbour Buoys.
223   Indian Ocean - SW Sector - Mozambique - Lighthouse Unlit.
224   Indian Ocean - SW Sector - Mozambique - Lighthouse Unlit.
253   South Atlantic Ocean - NE Sector - Rig List.
273   Messages in Force.
274   South Atlantic Ocean - NE Sector - Namibia - Mining Vessels. 
275   Indian Ocean - SW Sector - Offshore Mayotte Island - Survey Operations.
277   Indian Ocean - SW Sector - Offshore East London - Towing Operation.

27/09/2021

NB: This information is only updated during office hours 0730 -1600 Mon - Fri.

2021 Series

287   South West Coast - False Bay - Desalination Structure.
314   East Coast - Offshore Durban - Outfall Pipeline.
386   South Coast - Breede River Estuary - Construction.
404   West Coast - Offshore Alexander Bay - Mining Operations.
422   South West Coast - False Bay - Whittle Rock Buoy Out of Position.
438   East Coast - North Sand Bluff - North Sand Bluff Light Unlit.
445   South Coast - Berg River Mouth - RACONs Non-operational.
479   East Coast - Offshore Durban - Submarine Cable Operations.
483   Namibia - Offshore Oranjemund - Mining Vessels. 
487   Messages in Force.
 


Reporting of Navigational Hazards


Tide Tables for South Africa and Namibia

The South African Tide Tables may not be reproduced without written permission, as it is copyrighted to the South African National Hydrographer, SA Navy.

This page allows you to select the current and following month's tidal information for any of the tidal ports listed.  Please select a port from the drop-down list provided on the map below.  Please ensure your pop-up blocker is deactivated to allow the file to open.

 

  

© This information is copyrighted to The South African National Hydrographer, SA Navy. All information produced by the SA Navy Hydrographic Office is a product and is subject to the Copyright Act, 1978 (Act No. 98 of 1978, as amended up to Copyright Amendment Act 2002), the Hydrographic Act of 2019 (Act No. 35 of 2019), the South African Spatial Data Infrastructure Act, 2003 (Act No. 54 of 2003), the Policy on Pricing of Spatial Information Products and Services (2015) and the Promotion of Access to Information Act, 2000.

Tide Theory (pdf 847.36 KB)


Heights of Chart Datum Relative to Land Levelling Datum in South Africa and Namibia

Port

Up to
 31 Dec 1978

1 Jan 1997
to
31 Dec 1997
1 Jan 1998
to
31 Dec 2002

 1 Jan 2003
onwards

Walvis Bay -0.913 -0.900 -0.966 -0.966
Lüderitz -0.865* -0.900 -0.935 -1.055
Port Nolloth -0.718* -0.900 -1.075 -0.925
Saldanha -0.582 -0.900 -0.975 -0.865
Cape Town -0.829 -0.900 -0.975 -0.825
Simon's Town -0.651 -0.900 -1.003 -0.843
Hermanus -0.619 -0.900 -0.978 -0.788
Mossel Bay -0.761 -0.900 -1.163 -0.933
Knysna -0.625 -0.900 -1.048 -0.788
Port Elizabeth -0.838 -0.900 -1.026 -0.836
East London -0.762 -0.900 -1.006 -0.716
Durban -0.838 -0.900 -1.113 -0.913
Richards Bay -0.900 -0.900 -1.205 -1.015

* In use until 1 January 1994