M433-23(T) Port Arthur – Deployment of Research Equipment
Mariners are advised that subsurface research equipment will be installed at various locations in Port Arthur, predominantly Long Bay, from Monday, 18 December 2023 until 31 May 2024. The equipment will be deployed 5 metres below the surface and will not be marked by surface marker buoys. The equipment will be installed in the following positions:
| Site name | Latitude | Longitude |
| 100N | 43 7.762 | 147 51.990 |
| 200N | 43 7.712 | 147 51.991 |
| 400N | 43 7.5894 | 147 51.9576 |
| 800N | 43 7.385 | 147 51.829 |
| 100E | 43 7.997 | 147 52.264 |
| 200E | 43 7.997 | 147 52.339 |
| 400E | 43 7.997 | 147 52.487 |
| 800E | 43 7.997 | 147 52.778 |
| 100S | 43 8.119 | 147 52.120 |
| 200S | 43 8.138 | 147 52.120 |
| 400S | 43 8.237 | 147 52.107 |
| 800S | 43 8.460 | 147 52.006 |
| 100W | 43 7.864 | 147 51.862 |
| 200W | 43 7.878 | 147 51.796 |
| 400W | 43 7.769 | 147 51.672 |
| Safety Cove | 43 10.370 | 147 51.519 |
| East Bank | 43 9.412 | 147 53.550 |
| Golf Course Cliffs | 43 9.351 | 147 52.284 |
Mariners should navigate with caution in the area.