Meet the site
Outer Corsair Wall is the seaward continuation of the Nepean-side cliff, the last named section before the wall runs out into the open floor of Bass Strait. The Scuba Doctor listing describes it in the same terms as Inner Corsair – 'a very spectacular wall dive with lots of ledges, caves and drop-offs' – with the top at 10 m and the base at over 65 m, and it notes that it is a good crayfish wall. It lies only 32 m from the Rip Bank mark and the two are, in practical terms, one long face; a charter that calls a dive 'Rip Bank' may well put divers on this section.
The wall is the most exposed of the Nepean group. The shallow top is kelp and broken rock, and below the lip the face drops in long vertical sections with big overhangs and caves at intervals; the encrusting life is dense and the fish are those of the open coast as much as the bay – schools of sweep, boarfish, blue devils in the caves, sevengill sharks off the wall, and seals overhead. Visibility here is often the best at the Heads because the water is straight from Bass Strait.
That exposure is also the limit. The listing states that it 'can only be dived on slack water as it is only just out of The Heads', and in practice it is dived on the end of the flood in calm seas so that the returning ebb – which sets straight out to sea – is not running while divers are still in the water. It remains technically inside the shipping channel. This is a site for experienced Heads divers with a skipper who knows the entrance; technical divers value the 65 m base. Recreational Advanced divers can dive the top third on a short, disciplined profile when conditions allow, but it is not a regular charter drop.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
Outer Corsair Wall is recorded as Wall in Port Phillip Heads. The listed access is boat. Confirm the actual meeting point, route and permission to visit; a map pin does not establish any of these.
Topics flagged by the stored research
These are questions prompted by the existing notes, not a verified or complete hazard assessment.
- Current and timing
- Ask how the operator assesses the current window for the actual route. Historical tide notes are not a departure instruction.
- Other water users
- Ask about vessel activity, exclusion areas and the agreed surface arrangements.
- Planned depth
- Confirm the intended route and training requirements; the recorded maximum is not a target.
- Water movement
- Ask how swell and local exposure affect the proposed entry, exit and route.
Historical access notes exist for this record, but have not been independently verified for current use. Request current directions from the operator or site manager rather than following an old entry description.
Questions, answered
Is Outer Corsair Wall suitable for my certification?
The record lists Technical (decompression). That does not establish suitability for every route or day. Share your training, recent experience and equipment needs with the operator and ask about the specific proposed dive.
Can I book Outer Corsair Wall through YouDive?
YouDive is an independent research directory. Contact an operator directly to confirm whether it currently runs the trip, the inclusions and the booking terms.
What you might see
Southern rock lobster, southern blue devil, sponges, soft corals, zoanthids, silver sweep, longsnout boarfish, sharpnose sevengill shark, Australian fur seal
Location
Outermost wall on the Nepean side of the entrance, 32 m south of the Rip Bank mark and about 250 m south-west of Nepean Wall, facing Bass Strait.
Before you make plans
Conditions, access and operator schedules can change. This is a location guide, not a dive plan. Ask a local operator about current conditions and suitability for your training and experience.
Sources & further reading
scubadoctor.com.auscubadoctor.com.auscubadoctor.com.auRecord updated 27 Sept 2026. Source claims are being reviewed.
