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Koka Wreck

Koka Wreck

California, United States

Depth
Depth Icon

6m

Visibility
Visibility Icon

6m - 18m

Entry
Boat Entry Icon

Boat

Experience Level

Beginner

Koka Wreck

California, United States

Koka Wreck
Depth
Depth Icon

6m

Visibility
Visibility Icon

6m - 18m

Entry
Boat Entry Icon

Boat

Experience Level

Beginner

About Koka Wreck
This was a old ocean going tug. She was built in 1919 in the Puget Sound Navy Yard. She served in the U.S Navy for 18 years. In December 1937 she was send to her grave when she ran aground. She was abandoned by the crew and only discovered several years ago. More then 60 years under water and this still makes a great dive with beautiful corals and marine life in abundance.

Koka Wreck Dive Info

Terrain & Features

Reef, Wreck

Entry Type

Boat

Max Depth

6m

Visibility Range

6m – 18m

Experience Level

Beginner

Best Gas Mix

21%

O2
CNS Load (45 min)

5% at 4m / 36%

O2
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Marine Life
  • Angel Sharks
  • Calico Bass
  • Gobies
  • Perch
  • Various
Weather Conditions
Water temperature (℃)
Air temperature range (℃)
Average air temperature (℃)
Wind speed (km/h)
Precipitation (mm)
Dive Operators near Koka Wreck
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Location
Dive Site Hazards

  • 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.

  • 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.

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