Notice to mariners

A Notice to Mariners (NtM) reports maritime safety information on Northern Territory (NT) waters.

This includes:

  • closed waters (exclusion zones)
  • new hydrographic information
  • changes in channel depths
  • aids to navigation.

They're shared to mariners (recreational and commercial) and maritime-related organisations.

Marine operators are also required by law to report navigational hazards or dangers.

Types of notices

A notice can appear as a:

  • permanent notice - changes to information which result in a chart correction released by the Australian Hydrographic Service
  • preliminary notice (P) - a pre-emptive notification of a permanent change
  • temporary notice (T) - information valid only for a limited time.

Find notices below. They may also be published in local and state-wide print media and reproduced in the Australian Notices.

Port of Darwin local notices

NtM number and name Date published Notice type
Local NtM 2024 - 102 NT Search and Rescue Diving Operations PDF (495.8 KB) 18 Nov 2024 Temporary
Local NtM 2024 - 101 Notification of Flare Demonstration PDF (415.8 KB) 18 Nov 2024 Temporary
Local NtM 2024 099 Barossa Project: Nearshore Rock Installation and Barge Operations PDF (775.1 KB) 07 Nov 2024 Temporary
Local NtM 2024 - 097 Sandpiper pipe lay vessels and supporting vessels PDF (1.5 MB) 17 Oct 2024 Temporary
Local NtM 2024 - 096 Bayu Undan Pipeline Update on Marker Buoys PDF (429.8 KB) 15 Oct 2024 Temporary
Local NtM 2024 095 Subsea Survey and Un-crewed Surface Vessel PDF (758.4 KB) 11 Oct 2024 Temporary
Local NtM 2024 - 072 Operation of vessels within naval waters PDF (660.6 KB) 03 Sep 2024 Temporary
Local NtM 2024-071 Dredging of Darwin Ship Lift Approaches PDF (499.5 KB) 26 Aug 2024 Temporary
Local NtM 2024-069 Correction to NtM 2024-063 Installation of Project marker buoys PDF (481.8 KB) 23 Aug 2024 Temporary
Local NtM 2024-068 Correction to NtM 2024- 055 Darwin Ship lift turbidity buoys PDF (480.5 KB) 23 Aug 2024 Temporary
Local NtM 2024 - 057 Darwin Ship Lift Hydrographic Survey PDF (754.0 KB) 06 Aug 2024 Temporary
Local NtM 2024 - 026 Construction work Mandorah Breakwater PDF (590.0 KB) 30 May 2024 Temporary
Local-NtM-2024-018-Barossa-Gas-Export-Pipeline-Dredge-Area-Survey.pdf PDF (863.4 KB) 03 May 2024 Temporary
Local NtM 2024 - 003 Declared Port Depths PDF (598.9 KB) 16 Jan 2024 Permanent
Local NtM 2024 061 HMAS Coonawarra Naval Waters Special Markers PDF (674.1 KB) 01 Jan 2023
2019-021 Scientific instrument buoys PDF (632.0 KB) 27 Mar 2019 Temporary

NT coastal notices - whole of NT waters

Contact

If you would like to be added to the email distribution list, email ntm@nt.gov.au.

For more information, contact the regional harbourmaster.


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