Nepean Bay

Victoria, Australia

Depth

Visibility

5m - 15m

Entry

Boat

Experience Level

Beginner

Nepean Bay

Victoria, Australia

Depth

Visibility

5m - 15m

Entry

Boat

Experience Level

Beginner

About Nepean Bay

This wreck was a cargo ship that caught fire on 18 December 1861. The remains are scattered around Nepean Bay and are interesting to explore. There is a small rocky reef that is part of the marine reserve nearby. The bottom is sandy with weed patches. This is a great beginners dive.

Nepean Bay Dive Info

Terrain & Features

Wreck, Rock, Other, Reef

Entry Type

Boat

Max Depth

Visibility Range

5m – 15m

Experience Level

Beginner

Best Gas Mix

21%

O₂

CNS Load (45 min)

6% at 6m / 36%

O₂

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Marine Life

Crabs
Cuttlefish
Leather Jackets
Snappers

Weather Conditions

Water Temperature ℃

Dive Operators near Nepean Bay

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Location

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.

Bubble Trapping Under Overhangs — Rock overhangs can trap exhaled bubbles, reducing visibility and causing disorientation.

Reflected Surge Patterns — Surge reflecting off rock faces can create irregular and unpredictable water movement.

Current Funnel Effect — Narrow gaps between rocks can accelerate water flow unexpectedly.

Hidden Depth Variations — Complex reef topography can conceal depth changes, leading to unintended profile variations.

Distraction from Marine Activity — High fish activity can distract divers and delay depth or gas awareness.

Rapid Surge Direction Changes — Surge near reef structures can reverse direction quickly, pushing divers sideways into unexpected areas.

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