| * | 29 December 2025 | The December 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 |
|
|
05/01/2026 |
NB. This information is only updated
during
office
hours 0730 -1600 Mon - Fri.
2025 Series
217 South Atlantic Ocean - NE Sector - Angola - Unlit Structures.
372 Indian Ocean - SW Sector - Offshore Capo Delgado - MEZ Established.
374 Indian Ocean - SW Sector - Port of Maputo - Buoy Missing.
375 Indian Ocean - SW Sector, and South Atlantic Ocean - SE Sector - Space Debris.
379 South Atlantic Ocean and Indian Ocean Sectors - Rig list.
381 South Atlantic Ocean - NE Sector - Orange River Mouth - Mining Vessels List.
383 South Atlantic Ocean - NE Sector - Namibia - Wet Stow.
384 South Atlantic Ocean - NE Sector - Offshore Ascension Island - Seamounts.
2026 Series
003 South Atlantic Ocean - NE Sector - Orange River Mouth - Mining Vessels List.
004 Messages in Force.
|
|
05/01/2026 |
NB: This information is only updated during office hours 0730 -1600 Mon - Fri.
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.
591 South Coast - Offshore Port of Port Elizabeth - Anchor Lost.
605 Namibia - Offshore Orange River Mouth - Wet Stow.
609 West Coast - Port of Saldanha - Buoy Removed.
2026 Series
001 South Coast - Offshore Cape St Francis - Vessel Aground.
004 West Coast - Saldanha Bay - VHF off the Air.
006 Southwest Coast - Offshore Kaap Hangklip - Vessel Submerged and Adrift.
007 Namibia and RSA West Coast - Offshore Orange River Mouth - Mining Vessels List.
008 Southwest Coast - Gordon's Bay Harbour - Light Unlit.
009 Message in Force.
Reporting of Navigational Hazards
-
Changes observed at Sea by Mariners navigating beyond Harbours Reporting Form.
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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