| * | 08 October 2025 | The September 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.
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Summary |
Complete Set of Messages |
Last updated on |
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|
31/10/2025 |
NB. This information is only updated
during
office
hours 0730 -1600 Mon - Fri.
2025 Series
200 Indian Ocean - SW Sector - Port of Maputo - Buoy Missing.
217 South Atlantic Ocean - NE Sector - Angola - Unlit Structures.
221 South Atlantic Ocean - NE Sector - Namibia - Drilling.
287 South Atlantic Ocean - NE Sector - Orange River Mouth - Mining Vessels List.
305 South Atlantic Ocean and Indian Ocean Sectors - Rig list.
313 South Atlantic Ocean - NE Sector - Namibia - Firing Exercise.
314 Indian Ocean
- SW Sector, and South Atlantic Ocean - SE Sector
- Space Debris.
315 Indian Ocean - SW Sector, and South Atlantic Ocean
- SE Sector - Space Debris.
316 Messages in Force.
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|
31/10/2025 |
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.
2025 Series
129 West Coast - Offshore Lamberts Bay - Mooring Deployed.
380 South Coast - Offshore Port of Port Elizabeth - Buoy Deployed.
384 East Coast - Offshore Durban -
Diving Operations.
454 Namibia and RSA West Coast - Offshore Orange River Mouth - Mining Vessels
List.
475 South Coast - Offshore Cape Agulhas - Firing Exercise.
494 Namibia - Offshore Walvis Bay - Firing Exercise.
502 South Coast - Port of Port Elizabeth - Fairway Buoy Unlit.
503 East Coast - Offshore Durban - Towing Operation.
504 Message in Force.
Reporting of Navigational Hazards
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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 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 |
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