=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 28-AUG-96 :
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. 1958 - 1972 values based on 8 readuings per day; Reference BM disturbed in 1964, exact relationship between level of this BM and replacement BM is uncertain.Data for 1966 very suspect and deleted.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-JUN-91 :
Luderitz            427/011 RLR(1968) is 9.1m below BM1
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 2000May23 :
BM LUD1 installed April 1998 at 2.394m above MSL.  MSL=LLD. BM Tide Gauge Pit = MSL+2.156m.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 24-Sep-2009 :
Heights of chart datum relative to land levelling datum in South Africa and Namibia: Luderitz Datum: up to 31st Dec 1993= -0.865 Datum: 1st Jan 1994 - 31st Dec 1997 = -0.900 Datum: 1st Jan 1998 - 31st Dec 2002 = -0.935 Datum: 1st Jan 2003 onwards = -1.055 Datum is now LAT so unlikely to change.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-May-2010 :
The annual value for 2009 appears high this is probably because there are several large gaps in the previous data.

