Notice to Mariners No 76 of 2026 (Temp)

Monday 12 October 2026

HARBORS AND NAVIGATION ACT 1993

Notice to Mariners No. 76 of 2026 (Temporary)

Former notice 45 of 2026 (Temporary)

SOUTH AUSTRALIA – ST VINCENT GULF – PORT ADELAIDE RIVER - DREDGING OPERATIONS

Mariners are advised that dredging operations are being carried out within the Osborne # 4 wharf, including maintenance dredging on the approach, berth pocket, wharf and underneath the ship lift.

Dredging operations commenced from middle of June 2026, for 6 days a week, Monday to Saturday 07:00 to 19:00 and are now expected to by end of November 2026.

The dredge will maintain a listening watch on VHF channel 12, 14 and 16.

As part of this works, a submerged pipeline of length 1.8 km will be laid outside the navigable channel which will be marked by one (1) yellow buoy every 500m for the length of the pipe with a White light (Fl W 3s, Range 1-2 nautical miles)

Mariners are advised to exercise caution when navigating near this in this area

Charts affected:

AUS130, AUS485, AUS781, AUS4060, AUS4709

ENC AU5ADL01, AU35138, AU240130, AU160120

Gordon Panton

Manager Marine Safety and Compliance

Department for Infrastructure and Transport

12 October 2026

DIT 2017/02277/01