| * | 14 March 2025 | The February 2025 Edition of Monthly Notices to Mariners, and Cumulative List Of South African Notices To Mariners 2025 are now available. |
Navigation Messages Currently in Force.
|
Summary |
Complete Set of Messages |
Last updated on |
|
|
11/07/2025 |
NB. This information is only updated
during
office
hours 0730 -1600 Mon - Fri.
2024 Series
063 South Atlantic Ocean - NE
Sector - Angola - Unlit Buoy.
091 South Atlantic Ocean - NE Sector - Offshore Angola - Meteo
Buoy Reinstalled.
097 Indian Ocean - SW Sector - Madagascar - Mahajanga Harbour -
Buoy Missing.
099 South Atlantic Ocean - NE Sector - Angola - Mooring Buoys
and FPSO.
100 South Atlantic Ocean - NE Sector - Port of Lüderitz - Bottom
Seabed Flames Deployed.
268 South Atlantic Ocean - NE Sector - Namibia - Light Unlit.
368 South Atlantic Ocean - NE Sector - Survey Buoys Deployed.
2025 Series
138 South Atlantic Ocean - NE Sector - Angola - Seismic Survey.
142 Namibia and RSA West Coast - Offshore Luderitz - Drilling Operation.
150 Indian Ocean - SW Sector - Abandoned and adrift.
194 South Atlantic Ocean and Indian Ocean Sectors - Rig list.
198 Namibia and RSA West Coast - Orange River Mouth - Mining Vessels List.
200 Indian Ocean -SW Sector - Port of Maputo - Buoy Missing.
210 Message in Force.
|
|
11/07/2025 |
NB: This information is only updated during office hours 0730 -1600 Mon - Fri.
2024 Series
142 South Coast - Offshore Cape Infanta - Buoy.
143 Namibia - Port of Lüderitz - Seabed Flames Deployed.
144 West Coast - Saldanha Bay - Off the Air.
449 West Coast - Port of Lüderitz - Light Unlit.
2025 Series
129 West Coast - Offshore Lamberts Bay - Mooring Deployed.
178 Namibia and RSA West Coast - Offshore Orange River Mouth - Drilling Operation.
277 South Coast - Offshore Knysna - Floating Samples.
280 Namibia and RSA West Coast - Offshore Orange River Mouth - Mining List.
309 East Coast - Offshore Richards Bay - Underwater Cable Operations.
321 East Coast - Offshore Durban - Diving Operations.
322 South West to East Coast - Saldanha Bay to East London- Weather.
323 Message in Force.
324 West Coast to South Coast - Offshore Alexander Bay to Mossel Bay - Fisheries Research.
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.
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© This information is copyrighted to The 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 Bill of 2018, 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 |
1 Jan 1997 to 31 Dec 1997 |
1 Jan 1998 to 31 Dec 2002 |
1 Jan 2003 |
| 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