Local notices to mariners Local notices to mariners


Notices to mariners cover events, local issues and infrastructure issues that may affect navigation in the Auckland region.

Local navigation aids warnings

For any enquiries, please contact harbourmaster@at.govt.nz


On this page: Local notices to mariners currently in force


17 – 24 RNZAF Sere Course Training from Defence Facilities Hobsonville, Devoport and Ardmore Monday 29th April to Friday 17th May 2024 

All mariners are advised that the RNZAF will be undertaking Sere Signal Training at the NZDF facilities in Hobsonville, Devonport and Ardmore from 29 April 2024 to 17 May 2024, between 0900 hours to 1500 hours.

Pryrotechnics will be used (day/night handheld flares, miniflares and pistol flares).

Bruce Goff
Maritime Officer
Harbourmaster's Office


13 – 24 Pest fish control Lake Tomarata

All mariners are advised that Auckland Council will be conducting pest fish control operations in Lake Tomarata between 15 April 2024 and 19 April 2024. Nets will be set in the lake, and the operation of vessels (by the public) on the lake will not be possible.

Note: Work vessels will be operating on the lake and information signage will be
posted. Any queries, please contact Auckland Council (09 301 0101).

Aerial photo and map of area at Lake Tomarata where pest fish control is being conducted

*Not to be used for navigation.

Jason Son
Maritime Officer
Harbourmaster’s Office


14 – 24 Distress Signal Training, Te Atatu Boating Club

All mariners are advised that Auckland Sailing School will be undertaking Distress Signal Training at 32 Bridge Avenue, Te Atatu South.

Distress signals to be used as below:

Between 1300 hours and 1400 hours on 5 May 2024

Number Description
6 Handheld red distress flares
1 Handheld orange smoke signals
1 Buoyant orange smoke signals

Between 1300 hours and 1400 hours on 26 May 2024

Number Description
6 Handheld red distress flares
1 Handheld orange smoke signals
1 Buoyant orange smoke signals

Aerial photo and map of 32 Bridge Avenue, Te Atatu South

*Not to be used for navigation

Jason Son
Maritime Officer
Harbourmaster’s Office


15 – 24 Aids to navigation missing, Tamaki River

All mariners are advised that the No.2 Channel marker at the Tamaki River entrance has been reported as missing.

All mariners are advised to navigate with caution while operating in this area.

*Not to be used for navigation
Jason Son
Maritime Officer
Harbourmaster’s Office


12 – 24 Marine Survey, Hauraki Gulf

All mariners are advised that there will be marine survey operations in Hauraki Gulf
from 18 April 2024. The survey will be conducted for a period of 4 to 8 weeks, weather permitting. All mariners are advised to contact the vessel Ocean Invincible directly
via VHF if any queries regarding the operation.

Jason Son
Maritime Officer
Harbourmaster’s Office


10 – 24 Great Barrier Island temporary wharf closures, Okupu & Tryphena

All mariners are advised that the following 2 Auckland Transport wharf structures at Great Barrier Island will be closed to the public whilst the marine contractor STF Limited undertakes wharf maintenance work.

Okupu Wharf – STF will have a piling barge and dive crews on site from 12 March for 10 days, replacing the fender piles and stairs.

Tryphena Wharf – STF will have a variety of barges and divers working in and around the wharf from 22 March through mid-August 2024. The Inner Pontoon berth will be available. All vessels are requested to keep wake to a minimum and approach the wharf facility with caution.

Bruce Goff
Maritime Officer
Harbourmaster’s Office


05 – 24 Te Wero lifting bridge – mechanical issues

The Te Wero lifting bridge in the Viaduct Marina currently has mechanical issues and may not be able to fully lift as expected.

All vessels intending to navigate through the bridge span should navigate with caution and make an early call, prior to entering the buoyed approach channel on entry, to Viaduct Control on VHF Ch.73 for advice.

Please note that the double-span bridge lift is available if requested, for any reason at all (for example, size of vessel, wind strength, direction or skipper confidence). So please contact Viaduct Control early to discuss any requirements.

All mariners are advised to navigate with caution while operating in this area.

Aerial image showing Te Wero lifting bridge

Christiaan Moss
Deputy Harbourmaster
Harbourmaster’s Office


03 – 24 Navigational Hazard, Sandbank shoaling, Whau River Mouth

All mariners are advised that there is shoaling on the western side of the channel,
near the Whau River Mouth. The location is identified with yellow, as below.
All mariners are advised to navigate with caution while operating in this area.

Map of Whau River Mouth showing sandbank shoal navigational hazard

*Not to be used for navigation.

Christiaan Moss
Deputy Harbourmaster
Harbourmaster’s Office


34 – 23 Marine farm development, Western Firth

All mariners are advised that there will be marine farm development at Western Firth from 09/11/2023. The development includes the installation of navigation aids, mussel lines, and others. The site is located in YELLOW on the map below. All mariners are advised to navigate with caution while operating in this area.

*Not to be used for navigation

Jason Son
Maritime Officer
Harbourmaster’s Office


30 - 23 O Mahurangi Penlink Weiti River Bridge Construction Works

All mariners are advised that construction of the O Mahurangi Penlink River Bridge will commence mid September 2023 with the installation of temporary platforms built on the western and eastern banks of the Weiti River to facilitate the construction of the permanent Weiti River bridge. Work will involve pile drilling, vibing and hammering into the seabed.

A barge will operate between the two staging platforms providing materials to the work sites through to December 2026.

Passage through the Weiti River Bridge Construction Zone will remain open to mariners, however Weiti River closures are expected during the finally stages of the project build. All river closures will be notified prior to the planned works. Mariners are requested to keep wake to a minimum when transiting through the bridge construction zone for the safety of construction staff.

O Mahurangi Penlink Weiti River Bridge Construction Works satelite

O Mahurangi Penlink Weiti River Bridge Construction Works Map
*Not to be used for navigation.

Bruce Goff
Maritime Officer
Harbourmaster’s Office


29 – 23 Missing Isolated Danger Mark, Spray Rock, Waiheke

All mariners are advised that an Isolated Danger Mark is reported as missing from
Spray Rock, North of Waiheke Island. All mariners are advised to navigate with
caution while operating in this area.

29 – 23 Missing Isolated Danger Mark, Spray Rock, Waiheke
*Not to be used for navigation.

Jason Son
Maritime Officer
Harbourmaster’s Office


21 – 23 Marine construction, Hobsonville Point

All mariners are advised that marine construction will commence on the water at Hobsonville Point. The affected area is on the map below. Operations will be under way between 22 May 2023 and the end of March 2024, weather permitting, and the platform and barge will be involved in construction.

All mariners are advised to navigate with caution while operating in this area.

*Not to be used for navigation.

Jason Son
Maritime Officer
Harbourmaster’s Office


Notice: 43 – 22 Fallen trees, Matakana River

All mariners are advised that there are several fallen trees reported in upper reaches of Matakana River, potentially impeding navigation in this area. All mariners are advised to navigate with caution when operating in this area.

Location of fallen trees in Matakana river
*Not to be used for navigation.

Jason Son
Maritime Officer
Harbourmaster’s Office


Notice: 41 – 21 Great Barrier Island – no anchoring areas

This notice replaces previous Local Notice to Mariners 39 – 21.

All mariners are advised that there are three no anchoring/closed areas on Great Barrier Island. The no anchoring areas are: Blind Bay, Whangaparapara and Tryphena Harbours. You can anchor with a permit from MPI, but not for any other reason.

There is guidance on the MPI page.

Please contact Ministry of Primary Industries for further details Ministry for Primary Industries.

*Not to be used for navigation.

Jason Son
Maritime Officer


Notice: 19 - 21 Navigational hazard, sandbank shoaling, Tamaki River

All mariners are advised that a sandbank, which is North of the No.15 marker in Tamaki River, is shoaling due to sand-building. Locations are identified as per below and the depth in the vicinity could be lower than charted depth.

All mariners are to navigate with additional caution while operating in this area.

Map of sand bank shoaling navigational hazard, Tamaki River

*Not to be used for navigation.

Jason Son
Maritime Officer
Harbourmaster’s Office


Notice: 12 - 21 Kennedy Pt Waiheke Island Marina Development Project Stage 1

All mariners are advised that construction work for the new Kennedy Point Marina Devolvement will commence next week. Construction vessels, including a Jack-up Barge, will be operating in the area highlighted below.

All vessels are requested to keep clear of the marina construction zone and all authorised vessels to maintain a safe distance from any construction and work vessel during Stage 1 of the marina construction programme.

Notice: 12 - 21 Kennedy Pt Waiheke Island Marina Development Project Stage 1
*Not to be used for navigation

Bruce Goff
Maritime Officer
Harbourmaster’s Office


Notice to Mariners: 57 - 19 Submerged pile in the approaches to Tramcar Bay Boat Yard, Whangateau

The Harbourmaster has received reports of a submerged pile in the approaches to Tramcar Bay boat yard in the waters between Whangateau Harbour and Tramcar Bay.

All mariners are advised to navigate with extreme caution when operating in this area.

Area showing submerged pile in the approaches to Tramcar Bay Boat Yard, Whangateau
Not to be used for navigation.

Pulasthi Ranasinghe
Maritime Officer


Notice to Mariners: 32 - 19 Motuihe Wharf Closure

All mariners are advised that the Department of Conservation has closed the Motuihe wharf due to public safety, the wharf will remain closed until further notice.

The Department is working closely with engineers to look at options available to remedy issues and re-open the wharf as soon as practicable.

The Department apologises for any inconvenience and will continue to keep the public informed as they seek solutions.

Updates will be provided on the DOC website and should you require further information, please contact the DOC hotline on 0800 362 468.

View of above Motuihe Wharf  which is closed temporarily
Map not to be used for navigation.

Pulasthi Ranasinghe
Maritime Officer


Notice: 28 - 18 Hobson Bay/Okahu Bay wave screen

All mariners are advised to navigate with caution in the vicinity of the Hobson Bay/Okahu Bay derelict wave screen. Mariners are reminded that they should only navigate through the recognised entry/exit (as per chart NZ 5322).

Notice 28-18 Hobson Bay Okahu Bay wave screen
Map not to be used for navigation.

Christiaan Moss
Deputy Harbourmaster


Notice 22 - 17: Wairoa River, fallen tree (upper reaches), 20 July 2017

All Mariners are advised that a large tree has fallen into the upper reaches of the Wairoa River, potentially impeding navigation.

GPS coordinates:

  • Latitude 36°58’840
  • Longitude 175°02’655 

All mariners are advised to navigate with extreme caution in this area.

Notice 22–17 map
The map is not to be used for navigation.

Bruce Goff
Maritime Officer


Notice 08 - 17: Chart Plotters - updated 14 March 2017

All Mariners are reminded that electronic chart plotters are to be used as an aid to navigation and paper charts should be updated and consulted.

Electronic raster charts used on some plotters may not incorporate the latest chart corrections.

Mariners are reminded to use up to date charts for navigation and advised to contact their plotter supplier if in doubt.

Harbourmaster’s Office


Some images on this page are based on/include LINZ’s data which are licensed by Land Information New Zealand (LINZ) for re-use under the Creative Commons Attribution 4.0 International license.


Pest warning: Mediterranean Fanworm

The Mediterranean Farmworn is a pest that has been spotted in the Waitemata Harbour/inner Hauraki Gulf, as well as the Whangarei Harbour and Lyttleton Port.

Keep your boat's hull clean to reduce the risk of this pest clinging and causing damage to our marine life.

Marine Biosecurity Information: New Rules & Regulations

Marine pests spread easily through ballast water and hull fouling, including Mediterranean fanworm (Sabella Spallanzani) and Clubbed tunicate (Styela clava). Check to ensure your hull is clean and be aware of other regions rules before leaving Auckland.

Visit marinepests.nz for more information and to check marine biosecurity rules and regulations for different regions in the northern North Island.

Read further information on marine pests (PDF 334KB)


Weather information

For up-to-date weather information, visit the MetService website.

Link to Coastguard Now Casting Weather Information VHF Channels: https://www.coastguard.nz/boating-safely/marine-weather