Darker cells mean a higher score for this topic on that metric.
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Quick answers
Which local rescue or training agency should I check first?
Use the local lens: coastguard/federation norms and the shop briefing for that bay — not a blog visibility claim.
Why is risk scored so high here?
Silt, entanglement, lost exits and the urge to “just look inside” show up in fatality reports. Night-plus-wreck is worse.
What is the Yongala?
A 1911 passenger steamer off Queensland, now a protected historic wreck and a famous GBR dive — typically exterior.
What is the Thistlegorm?
A 1941 British cargo ship bombed in the Red Sea, rediscovered by Cousteau’s team in the 1950s, now a mass recreational wreck.
Are wrecks war graves?
Many are. Touching remains or souvenirs is illegal and indecent.
Do people need trimix?
Not for typical recreational wreck exteriors. Deep technical wrecks are another sport.
Wrecks decay. Storms open new rooms and close old ones. The live story is permits and collapsing structure, not a new specialty logo.
The outlook is more exteriors, fewer casual hatches.
Trends
- Photogrammetry — Science and souvenir-without-taking.
- Tighter grave rules — Especially WWII Pacific wrecks.
- Shallower artificial reefs — Purpose-sunk training wrecks.
- Tech travel — Helium to names that used to be “just a bit deep.”
- Crowd pressure on Thistlegorm and Liberty — The famous ones are wearing out.
Conservation
- Souvenir extraction — Still happening.
- Anchor damage to wrecks — Boats are a hazard to the site.
- Fuel and munitions leaks — An environmental and safety issue.
- Coral on wrecks — The reef-etiquette chapter still applies.
Access
- Permit cost — Who gets to visit a national archive.
- Local guide monopolies — Sometimes safety, sometimes rent.
- Training access — Overhead courses are unevenly available.
- Disability — Almost no wreck is adapted; a few shallow artificial reefs are kinder.
Outlook
- Exteriors as the mass product — Honest and enough.
- Let wrecks collapse without people inside — A future some parks will mandate.
- This page will not become a penetration manual — On purpose.
Wrecks have a half-life. Divers should not be inside the half that is ending.