|*||29 December 2021||The December 2021 Edition of Monthly Notices to
updated Cumulative List Of South African Notices To Mariners are
The Annual Summary of South African Notices to Mariners 2022 Edition is 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.
Complete Set of Messages
Last updated on
NB. This information is only updated during office hours 0730 -1600 Mon - Fri.
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.
Indian Ocean - SW Sector - Mozambique -
360 South Atlantic and Indian Sector - Rig List.
014 South Atlantic Ocean - NE Sector -
Offshore Luderitz - Drilling Operations.
South Atlantic Ocean - NE Sector - Namibia - Mining Vessels.
South Atlantic Ocean - NE Sector - Offshore Hottentot Pt - Fishing Gear.
023 Messages in
026 South Atlantic Ocean - NE Sector - South
Rocks - Drilling Operations.
027 Indian Ocean - SW Sector - Offshore Mosselbay - Towing Operation.
028 South Atlantic Ocean - NE Sector - Offshore Banana - Survey
NB: This information is only updated during office hours 0730 -1600 Mon - Fri.
East Coast - Sodwana Bay VHF off air.
670 South Coast - Offshore Cape Infanta - Buoy.
673 South Coast - Cape St Francis - Foghorn.
018 Namibia - Offshore Luderitz - Drilling Operations.
022 Namibia - Offshore Oranjemund - Mining Vessels.
023 Namibia - Offshore Hottentot Pt - Fishing Gear.
032 Messages in Force.
040 East Coast - Port of Durban - Fairway Buoy Unlit.
041 South West Coast - Offshore Cape Point - Towing Operation.
043 West Coast - Offshore Island Pt - Survey Operation
Reporting of Navigational Hazards
Changes observed at Sea by Mariners navigating beyond Harbours Reporting Form.
Changes observed by Mariners concerning Ports and Harbours Reporting Form.
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
1 Jan 1997
31 Dec 1997
1 Jan 1998
31 Dec 2002
1 Jan 2003
* In use until 1 January 1994