*  05 November 2021 The October 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

25/11/2021

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.
330 Indian Ocean - SW Sector - Mozambique - Maputo Buoys/Lights Unlit.
331 Messages in Force.
339 South Atlantic Ocean - NE Sector - Namibia - Mining Vessels.
343 Indian Ocean - SW Sector - Approaches to La Reunion - Whale Carcass.
344 South Atlantic and Indian Sector - Rig List.
345 South Atlantic Ocean - NE Sector - Offshore Angola - Towing Operation
.
 

25/11/2021

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

2021 Series

287 South West Coast - False Bay - Desalination Structure.
445 South Coast - Berg River Mouth - RACONs Non-operational.
541 West Coast - Offshore Alexander Bay - Mining Operations.
569 South West Coast - Offshore Cape Point - Waverider Buoy Deployed.
606 Messages in Force.
612 Namibia - Offshore Oranjemund - Mining Vessels.
615 West to South West Coast - Cape Columbine to Cape Agulhas - Weather Alert.
617 West Coast - Offshore Cape Columbine - Towing Operation.

 


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 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