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Port Franklin Reef

Port Franklin Reef

Victoria, Australia

Depth
Depth Icon

15m

Visibility
Visibility Icon

3m - 8m

Entry
Boat Entry Icon

Boat

Experience Level

Beginner

Port Franklin Reef

Victoria, Australia

Port Franklin Reef
Depth
Depth Icon

15m

Visibility
Visibility Icon

3m - 8m

Entry
Boat Entry Icon

Boat

Experience Level

Beginner

About Port Franklin Reef
Reef extending out several hundred metres perpendicularly from the shoreline of Portsea Points of interest:Good sized fish Blue throated wrasse, leatherjackets, occasional large rays and sizeable octopus old bottles are common as this area was busy with shipping earlier last century Can be dived as a drift on flood or ebb tide as well as a slack water dive On a flood tide drift eastward from the Portsea pier side across the reef, on an ebb drift from the western side of the reef towards the pier Varying marine life that changes with the seasons

Port Franklin Reef Dive Info

Terrain & Features

Rock, Wall, Drift

Entry Type

Boat

Max Depth

15m

Visibility Range

3m – 8m

Experience Level

Beginner

Best Gas Mix

21%

O2
CNS Load (45 min)

11% at 13m / 36%

O2
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Marine Life

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Weather Conditions

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Location

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Dive Site Hazards

  • 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.

  • Unstable Visual Ascents — Relying on wall visuals can destabilise ascents.

  • Gradual Depth Creep — Lack of visual bottom reference can cause unnoticed descent.

  • Unsignalled Downcurrents — Downcurrents can form without visible indicators.

  • Eddy Pull-Off Zones — Eddies behind structures can pull divers away from the main drift line.

  • Delayed Surface Pickup — Strong current can exceed surface tracking assumptions, delaying boat pickup.

  • Vertical Current Shear — Currents may vary by depth, causing vertical separation even when divers stay together.

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