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USCG Blackthorn Wreck

USCG Blackthorn Wreck

Florida, United States

Depth
Depth Icon

24m

Visibility
Visibility Icon

5m - 15m

Entry
Boat Entry Icon

Boat

Experience Level

Beginner

USCG Blackthorn Wreck

Florida, United States

USCG Blackthorn Wreck
Depth
Depth Icon

24m

Visibility
Visibility Icon

5m - 15m

Entry
Boat Entry Icon

Boat

Experience Level

Beginner

About USCG Blackthorn Wreck
This Coast Gaurd Cutter was built in Minnesota, USA in 1943. In January 1980 she collided with a atanker known as 'The Capricon' in where 23 of the Blackthorn crew were killed. Her hull was severly damaged after the accident which resulted in her being towed, and eventually sunk to form part of a artificial reef. Is is considered to be Pinella County's best wreck dive with lots to see and explore.

USCG Blackthorn Wreck Dive Info

Terrain & Features

Wreck, Shark, Reef

Entry Type

Boat

Max Depth

24m

Visibility Range

5m – 15m

Experience Level

Beginner

Best Gas Mix

21% – 41%

O2
CNS Load (35 min)

16% at 22m / 36%

O2
Multi-Level Dive Planner
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Marine Life
  • Amber Jacks
  • Crevelle Jacks
  • Sharks
  • Spanish Mackerel
  • Trigger Fish
  • Various
Weather Conditions

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Dive Operators near USCG Blackthorn Wreck

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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.

  • Situational Awareness Loss — Divers may fixate on sharks and lose depth or position awareness.

  • Subtle Behavioural Shifts — Changes in shark behaviour may be missed without active observation.

  • Blue-Water Reference Loss — Lack of visual references increases ascent and descent instability.

  • 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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