For discussions of MSL changes and extreme sea levels around Namibia and South Africa, see: G.B.Brundrit, S.Afr.J.Mar.Sci.,16,9-17,1995 and S.Searson and G.B.Brundrit, S.Afr.J.of Science, 91,579-588,1995.
Documentation added 2006-07-24
Data for 2000 were supplied by BODC. The values were supplied to BODC via the University of Cape Town and so are not being classed as official.
Documentation added 2006-08-07
Following the recent supply of data from the South African Hydrographic Office the data values for the year 2000 have now been revised with the official values.
Documentation added 2009-09-24
Heights of chart datum relative to land levelling datum in South Africa and Namibia: Richards Bay Datum: up to 31st Dec 1978 = -0.900 Datum: 1st Jan 1979 - 31st Dec 1997 = -0.900 Datum: 1st Jan 1998 - 31st Dec 2002 = -1.205 Datum: 1st Jan 2003 onwards = -1.015 Datum is now LAT so unlikely to change.
Documentation added 2013-03-27
Richards Bay is now a RLR station.
Documentation added 2019-11-07
The South African Navy Hydrographic Office (SANHO) are the copyright owners of the Richards Bay sea level data and must be contacted to request permission to use the data.
Documentation added 2021-02-10
"The South African Hydrographic Office have asked us to remove this record in line with the Hydrographic Act of 2019 (Act No. 35 of 2019) and the South African Spatial Data Infrastructure Act, 2003 (Act No. 54 of 2003). The data can be obtained directly from SANHO (email: email@example.com)
Hydrographic Office Maritime Headquarters Private Bag X1 Tokai 7966