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 2009-09-24
Heights of chart datum relative to land levelling datum in South Africa and Namibia: Hermanus Datum: up to 31st Dec 1978 = -0.619 Datum: 1st Jan 1979 - 31st Dec 1997 = -0.900 Datum: 1st Jan 1998 - 31st Dec 2002 = -0.978 Datum: 1st Jan 2003 onwards = -0.788 Datum is now LAT so unlikely to change.
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: firstname.lastname@example.org)."
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