Please note: In many cases, the station position in our database is accurate
to only one minute. Thus, the tide gauge may not appear to be on the coast.
Sultan Shoal 555/021 RLR(1986) is 10.2m below Brass Bolt
Documentation added 1993-07-12
Sultan Shoal 555/021 RLR(1986) is 10.2m below Brass Bolt
Documentation added 2010-10-12
Benchmark for the period 1969-1979 was Dampier Survey 'T' mark 6.500m above Datum 1969-1985. 1980-1985 benchmark was Brass Bolt 5.004m above Datum 1969-1985. 1986 onwards the ACD changed to 4.922m below the Brass Bolt. In 2009 a new jetty was re-constructed ACD remained the same while Primary benchmark is now Cut Mark 4.941m above ACD. Because of the building of the new jetty there is a gap in the data Jan 2008- Sept 2009.
Data Authority
Maritime Port Authority of Singapore Hydrographic Department 460 Alexandra Road, PSA Building #20-00 Singapore 119963