Port Chalmers has three berths, suitable for handling containerised, multipurpose, and conventional vessels. Berthing flexibility is guaranteed by a swinging basin dredged to 13.5 metres, with a turning diameter of 487 metres.
Berth details - Lower Harbour - as at 31 March 2018:
| BERTH | LENGTH | DEPTH | Min UKC | Permissible Draft @ CD | Approach Depth | Hdg | Ht (CD) |
| C/T | 300m | 13.9m | 0.4m | 13.5m | 13.5m | 042/222 | 4.6m |
| M/P | 297m | 14.0m | 0.4m | 13.6m | 13.5m | 020/200 | 4.6m |
| Beach | 412m | 11.5m | 0.3m | 11.2m | 13.5m | 073/253 | 4.6m |

Tankers, fishing vessels, bulk carriers and smaller conventional vessels are the principal users. The channel between Port Chalmers and Dunedin is capable of handling vessels of up to 180 metres LOA, 8.0 metres draught and 32.3 metres beam. Vessels in excess of 150 metres LOA can transit in daylight only.
The Dunedin wharves are adjacent to the cold storage industry established to service the meat, dairy, fishing and horticultural exports of the region.
In addition to the Dunedin wharves, the Ravensbourne fertiliser pier is located between Port Chalmers and Dunedin.
Berth details - Upper Harbour - as at 31 March 2018:
| BERTH | LENGTH | DEPTH | Min UKC | Permissible Draft @ CD | Approach Depth | Hdg | Ht (CD) |
| Victoria T/U | 177m | 8.2m | 0.3m | 7.9m | 5.7m | 042/222 | 4.6m |
| Victoria (CM) | 120m | 7.1m | 0.3m | 6.8m | 5.7m | 042/222 | 4.6m |
| Victoria X/Y 210 x 25 m | 244m | 7.8m | 0.3m | 7.5m | 7.0m~ | 042/222 | 4.6m |
| O/J Basin Dia 260m | 214m | 8.1m | 0.3m | 7.8m | 7.0m~ | 089/269 | 4.6m |
| Leith 200 x 30m | 153m | 7.8m | 0.3m | 7.5m |
7.1m ~ |
089/269 | 3.8m |
| Leith 200 x 35m | 153m | 7.8m | 0.3m | 7.5m |
7.1m ~ |
089/269 | 3.8m |
| LPG | 62m | 6.1m | 0.3m | 5.8m | 6.1m | 104/284 | 3.9m |
| Ravensbourne | 149m | 8.2m | 0.3m | 7.9m | 7.5m~ | 073/253 | 4.4m |
| Birch St | 310m | 6.7m | 0.3m | 6.4m | 4.5m | 084/264 | 4.7m |
| Rattray * | 397m | 4.2m | 0.3m | 3.9m | 4.5m | 084/264 | 4.6m |
The following table outlines the Static UKC values within Port Otago.
|
Area |
Static UKC allowance |
|
Channel for Vessel other than Tankers and Bulk Carriers > 30.5 m beam |
>10% of draught Or 0.8 m |
|
Tankers and Bulk Carriers > 30.5 m Beam - Victoria Channel |
1.25 m |
|
Dunedin Area – South of Beacon No 67 |
0.6 m |
|
Berthing Boxes – Dunedin, Ravensbourne and Beach St – Port Chalmers |
0.3 m |
|
Berthing Boxes – C/T and M/P berths – Port Chalmers |
0.4 m |

This slipway is capable of handling vessels of 500t displacement and is mainly used by fishing trawlers and tourist launches, as well as Port Otago floating plant.