HMAS Orion
HMAS Orion (S-71) was an Oberon class submarine laid down by Scotts Shipbuilding and Engineering Company at Greenock in Scotland on 6 October 1972, launched on 16 September 1974 and commissioned on 15 June 1977. HMAS Orion paid off into reserve at Garden Island, Western Australia in 1996.
| Oberon-class submarine |
 Royal Navy |
| Oberon | Ocelot | Odin | Olympus | Onslaught | Onyx | Opportune | Opossum | Oracle | Orpheus | Osiris | Otter | Otus |
 Royal Australian Navy |
| Onslow | Orion | Otama | Otway | Ovens | Oxley |
 Royal Canadian Navy |
| Ojibwa | Okanagan | Onondaga | Olympus | Osiris |
 Brazilian Navy |
| Humaita | Riachuelo | Tonelero |
 Chilean Navy |
| O'Brien | Hyatt |
List of submarines of the Royal Navy |
Categories
Royal Australian Navy ships | Oberon class submarines | Cold War naval ships of Australia