||01 October 2020||
The September 2020 Edition of Monthly Notices to Mariners is now available.
||29 June 2020||
SAN HO-15 International Regulations for Preventing Collisions at Sea 1972 Edition 2020 now available for ordering through chart agents.
||03 June 2020||
Hydrographic Act No. 35 of 2019 was gazetted. Click
to read the act.
The South African National Hydrographer's Message in response to COVID-19
“The recent outbreak of the Coronavirus (COVID-19) pandemic has the world scrambling to “flatten the curve” and slow down the spread of this disease. South Africa has not escaped the reach of this pandemic.
During the 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 will enter into a rotating watch system ensuring that all functions remain capacitated at all times. We have prioritised our services to the following:
Coastal Navigation and NAVAREA VII Warnings;
Notices to Mariners;
Paper chart, ENC supply and production activities; and
We are 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.
Indian Ocean - SW Sector - Port of Beira - Buoys.
087 Indian Ocean - SW Sector - Madagascar - Port of Ehoala - Lights.
120 South Atlantic Ocean - NE Sector - Angola - Mooring Buoys and FPSOs.
122 Indian Ocean - SW Sector - Port of Pemba - Buoy out of position.
123 Indian Ocean - SW Sector - Port of Mocimboa da Praia - Buoy out of
124 Indian Ocean - SW Sector - Port of Nacala - Buoy Unlit.
125 South Atlantic Ocean - NE Sector - Port of Luanda – Mooring Buoys.
194 Indian Ocean - SW Sector - Port of Maputo -
Buoys and Lights.
220 South Atlantic Ocean - NE Sector - Rig List.
224 South Atlantic Ocean - NE Sector -
Offshore Port Nolloth - Drilling Operations.
225 South Atlantic Ocean - NE Sector - Angola -
226 Indian Ocean - SW Sector - Port of Quelimane
- Buoys and lights.
231 South Atlantic Ocean - NE Sector - Mining
232 Messages in Force.
NB: This information is only updated during office hours 0730 -1600 Mon - Fri.
390 South Coast - Offshore Mossel Bay - Drilling Operations.
483 South Coast - Port of Ngqura - Buoy.
502 West Coast - Offshore Port Nolloth - Drilling Operations.
542 Namibia - Orange River Mouth - Mining Vessels.
545 East Coast - Offshore Durban - Cable Operations.
551 East Coast - Offshore Durban - Towing Operation.
552 Messages in Force.
553 West Coast - Saldanha Bay - Aquaculture Development Zones.
554 West Coast - Offshore Port Nolloth - Drilling 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