GLOSS Station Handbook

GLOSS Station Handbook – Simonstown

The GLOSS Station Handbook is currently being re-designed and upgraded.

Until a new version is available, the tide gauge station list below from the last version of the Handbook provides links to further details about each tide gauge in the GLOSS Core Network. Click the GLOSS number buttons to view the information. Click column headings to sort the table.

Station information

Gloss number268
Station nameSimonstown
CountrySouth Africa
Time zone030E, GMT + 2hrs
Latitude (+ve N)-34.18333
Longitude (+ve E)18.43333
Observation periods1957-
Responsible countrySouth Africa
Authority responsible for tide gaugeHydrographer, South African Navy, Private Bag X1, Tokai 7966, South Africa
GLOSS contactSouth Africa
Committed to GLOSSYes
Digital dataYes
Aditional parametersSea temperature (from 1990), air pressure (from 1990)
Data acquisition rateFloat/stilling well - digitized hourly. Acoustic meaned values recorded at one minute intervals.
Fast delivery data at UHSLCData 221 File format
High frequency data at BODCData 268 Document 63878
High frequency data at UHSLCData 221a Document 221a File format
Data held at national organisationYes
Real-time data availableNo
Additional parameters (real-time)None
Tide gauge benchmarkTrig Survey BM 28 G. UTM Grid Reference 34 HBT 641144.
Benchmark relationshipsTide Gauge Zero (TGZ) = South Africa Chart Datum
TGZ = 0.651m below LLD (MSL) until 31 December 1978
TGZ = 0.900m below LLD (MSL) from 01 January 1979
TGZ = 3.663m below BM 28 G
Data at PSMSL
Annual MSL (RLR) dataRLR 826
Annual MSL (RLR) plot
MSL methodDoodson X0 filter
PSMSL code826
Other relevant codesUHSLC 221
Additional information
Other relevant informationValues based on GPS have been observed but not finally calculated.
Nearest Met. stationCape Town
Last updated11 December 2002