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AV Ulonga

AV Ulonga

Southern Australia, Australia

Depth
Depth Icon

39m

Visibility
Visibility Icon

8m - 23m

Entry
Boat Entry Icon

Boat

Experience Level

Advanced


About AV Ulonga

This vessel was converted numerous times to suit different maritime tasks until she got lost in a storm in 1976 and rediscovered in 2001. The wreck lies at 39m and is subject to very, very strong currents. Advanced divers only, no penetration, watch for the usual entanglements, lots of anchors and siltiness - requires lots of experience. There's lots of marine life and growth and even an upside down car on the deck.

AV Ulonga Dive Info

Terrain & Features

Wreck, Deep

Entry Type

Boat

Max Depth

39m

Visibility Range

8m 23m

Experience Level

Advanced

Best Gas Mix

21% – 29%

O2

14% at 37m / 30%

O2
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Photo gallery

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Marine Life

  • Bullseyes
  • Crayfish
  • Snapper
  • Wobbegongs
Weather Conditions

Weather information for AV Ulonga coming soon.

Dive Operators near AV Ulonga

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Location

Location details missing.

Dive Site Hazards

  • Deceptive Entry Openings — Openings may become restrictive inside due to angle, collapse, or corrosion.

  • Surge-Induced Internal Silt Shift — Internal surge can move silt and debris without direct contact.

  • Partial Overhead Environment — Many wrecks limit direct ascent even without full penetration.

  • Fine Rust Particle Silt-Out — Disturbed rust particles can rapidly reduce visibility.

  • Gradual Narcosis Onset — Narcosis may develop slowly, making self-assessment unreliable.

  • Task Fixation at Depth — Cognitive narrowing at depth can reduce awareness of time and ascent rate.

  • Increased Gas Density Breathing Load — Higher gas density at depth increases work of breathing.

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