31 Dec 2025 / Singapore

Deployment and servicing of ADCP / AWAC and hydrophone

The working period for the deployment and servicing of ADCP/AWAC and hydrophone has been extended, and the work will now be conducted between 6 January and 5 July 2026.

According to the Maritime and Port Authority of Singapore Port Marine Notice No.164 of 2025, the work will be carried out at sea during daylight hours (0800-1800 hours local time) - including Sundays & public holidays - within the working area bounded by the following coordinates (WGS 84 Datum):
AC1) 01°17.021’N / 103°53.951'E
AC2) 01°18.091'N / 103°56.522'E
AC3) 01°16.127'N / 103°52.061'E
AC4) 01°18.256'N / 103°58.853'E
UN2) 01°18.674'N / 103°59.361'E
UN3) 01°18.091'N / 103°56.522'E
UN4) 01°16.774'N / 103°52.562'E

DHI will conduct diving operations for ADCP/AWAC and hydrophone instrument deployment, monthly maintenance and instrument retrieval. DHI’s survey vessel will remain at site throughout the entire process for approximately 2-4 hours.

Craft involved in the works will exhibit the appropriate local and international day and night signals.

When in the vicinity of the working area, mariners are reminded to:
a) Keep well clear and not to enter the working area;
b) Maintain a proper lookout;
c) Proceed at a safe speed and navigate with caution;
d) Maintain a listening watch on VHF Channel 12 (East Control);
and
e) Communicate with East Control on VHF Channel 12 for assistance, if required.

For information about operations in Singapore, contact GAC Singapore at [email protected]

If quoting any content from Hot Port News, please cite GAC Hot Port News as the source.

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