| * | 02 December 2025 | The November 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 |
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|
12/12/2025 |
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.
336 South Atlantic Ocean - NE Sector - Namibia - Drilling.
345 Indian Ocean - SW Sector, and South Atlantic Ocean - SE Sector - Space
Debris.
350 South Atlantic Ocean - NE Sector - Orange River Mouth - Mining Vessels
List.
363 Indian Ocean - SW Sector - Not Under Command.
364 South Atlantic Ocean and Indian Ocean Sectors - Rig list.
365 Messages in Force.
367 South Atlantic Ocean - NE Sector - Namibia - Drilling.
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|
12/12/2025 |
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.
518 South Coast - Algoa Bay - Buoys Deployed.
544 Namibia and RSA West Coast - Offshore Orange River Mouth - Drilling
Operations.
556 Namibia and RSA West Coast - Offshore Orange River Mouth - Mining
Vessels List.
574 West Coast - Offshore Island Point - Fishing Gear Left.
575 Message in Force.
576 Namibia and RSA West Coast - Offshore White Point - Drilling
Operations.
577 South West Coast to East Coast - Weather Alert.
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 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