Six South Australian ports re-declared as security regulated zones across twenty maps

A delegate of the Secretary of the Department of Home Affairs has revoked the instrument that declared six South Australian ports as security regulated ports and re-declared all six with boundaries redrawn across 20 maps. The decision was issued as notice NTC-31641 under subsection 13(1) of the Maritime Transport and Offshore Facilities Security Act 2003, signed on 6 November 2026 and commenced upon publication in the Commonwealth of Australia Gazette on 12 November 2026. The full instrument, including the 20 boundary maps, is registered under reference C2026G00725.

The new declaration replaces notice NTC-31092, which had declared the same six ports as security regulated ports and was published in the Gazette on 20 August 2026 under reference C2026G00555. Both the revocation and the fresh declaration are contained in the single notice NTC-31641, which states that the notice remains in force until otherwise revoked in writing and again published in the Gazette. No transition period is provided: the instrument took effect the moment it appeared in the Gazette.

The six ports and their map sheets

The declaration covers the port areas “intended for use either wholly or partly in connection with the movement, loading, unloading, maintenance or provisioning of security regulated ships”, with boundaries as shown on the attached maps:

• Port of Port Adelaide — Maps 1 to 9
• Port of Port Lincoln — Maps 10 to 11
• Port of Port Pirie — Maps 12 to 14
• Port of Port Giles — Maps 15 to 16
• Port of Wallaroo — Maps 17 to 18
• Port of Thevenard — Maps 19 to 20

Port Adelaide carries by far the largest share of the boundary sheets, with nine maps assigned to it, while Port Lincoln, Port Giles and Wallaroo receive two each.

Scope of the instrument and its technical detail

The operative text follows the standard structure for these declarations: the delegate first revokes the earlier notice, then declares that the defined areas are security regulated ports, and specifies that the boundaries are those shown on the attached maps, which form part of the notice. The Gazette record lists the individual map sheets as registered on 12 November 2026, each captioned by port name and sheet number out of 20.

One detail differs between the operative text and the attached sheets: the body of the notice assigns Port Adelaide “Maps 1 to 9”, while the map sheets registered with the instrument run from Map 1 to Map 7 and then Map 9, with no Map 8 appearing in the published sequence. The Port Giles entry is also drafted without the word “Maps” before its numbers, reading “15 to 16”. The declaration itself is silent on those points and refers only to the boundaries shown on the maps.

Signatory and the wider South Australian sequence

The notice was signed by Jaran Blethyn (Position No: 48000469), Delegate of the Secretary of the Department of Home Affairs.

• NTC-31641 — declaration of security regulated port for the six ports, signed 6 November 2026, registered 12 November 2026 as C2026G00725.
• NTC-31092 — the revoked instrument, published 20 August 2026 as C2026G00555.
• NTC-31695 — a related delegate instrument for Adelaide Airport, signed 9 November 2026 and registered 10 November 2026 as C2026G00723.
• NTC-31105 — declaration of the Port of Ardrossan as a security regulated port, published 27 August 2026.

The clustering of these instruments shows a continuing redrawing of South Australian port and airport boundaries through individual Gazette notices rather than a single omnibus instrument.

Why it matters

A security regulated port declaration is the mechanism through which the Maritime Transport and Offshore Facilities Security Act 2003 attaches to a defined port area, which is why the precise map boundaries matter to port operators, terminal staff and shipping companies working the wharves. Because the August notice has been revoked outright, the boundaries attached to NTC-31092 no longer apply, and anyone relying on the earlier map set must work from the 20 sheets published with NTC-31641.

Source: Commonwealth of Australia Gazette, No. C2026G00725, 12 November 2026, Government Notices (official reference: C2026G00725).