Meet the site
The Portsea Hole Wreck is a small deliberate addition to Victoria's most-dived deep site: a 13 m wooden fishing boat sunk in the early 1980s as an artificial reef and dive attraction about 70 m past the eastern end of the Portsea Hole wall, in 25–27 m on the flat at the edge of the South Channel. The Scuba Doctor listing records that the authorities initially objected to the scuttling on the grounds that it was a navigation hazard – a concern, as the listing dryly notes, that its 26 m depth makes questionable.
Four decades on the hull is a reef in its own right. The listing describes it as 'now covered with sponges and other biological growth that has attracted numerous fish species', and the growth is the same filter-feeding community as the wall a few metres away – encrusting and finger sponges, ascidians, hydroids, zoanthids – with the fish concentrated around the structure: bullseyes and old wives in the hull, blue devils in the shadows, leatherjackets, wrasse and goatfish, and nudibranchs and seahorses in the growth. The timber is soft and the wreck is small enough to see in a few minutes, but it makes a natural turn point for a Portsea Hole dive and a target for navigation practice.
The practical issue is depth: the whole dive is at 25–27 m with no shallower option until the wall is regained, which is why the listing rates it Advanced and prescribes the flood slack so that the returning ebb sets divers back toward the hole. It is a common extension on Advanced deep dives and on nitrox dives, and it is worth doing once for the contrast between an overgrown timber hull and the natural wall beside it.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
Portsea Hole Wreck is recorded as Wreck 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.
- Lines and obstructions
- Discuss any known entanglement concerns and the suitability of the planned area.
- Planned depth
- Confirm the intended route and training requirements; the recorded maximum is not a target.
- Overhead environments
- Ask whether the plan stays entirely in open water. A wreck or cave listing is not permission or training to enter.
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 Portsea Hole Wreck suitable for my certification?
The record lists Advanced Open Water. 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 Portsea Hole Wreck 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
Encrusting and finger sponges, ascidians, hydroids, zoanthids, bullseyes, old wife, southern blue devil, leatherjackets, wrasse, bluespotted goatfish, nudibranchs, seahorses
Location
A 13 m fishing boat scuttled about 70 m past the eastern end of Portsea Hole, 36 m north-north-west of the Portsea Hole mark, on the edge of the South Channel.
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 26 Sept 2026. Source claims are being reviewed.
