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Map of J Reef (JY Reef)
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J Reef (JY Reef)

Georgia, United States
AOW suggested17–24 m depthBoat entryRash guard or 2mm shorty typical

Boat dive — see Entry & access.

J Reef (JY Reef) at a glance

J Reef (JY Reef) is a advanced boat dive site in Georgia, United States with depths of 16.8–23.7 m (55–78 ft). Typically most favorable Jul · from 3 years of archive data. Divers commonly see Red snapper, Black sea bass, and Great barracuda. Recent reports put the water around 30°C (86°F). Check the latest conditions and entry details before you go.

Marine model · graded 4h ago
0.8 mwaves — under a meter expected

Tap a factor for its source and model point · Forecast 30°C · seasonal avg 30°C

Site hazards: Current on the wreck (anchor-line descents/ascents advised), jellyfish in the water column, thermocline around 35-40 ft, silt-out risk inside the wreck, seasickness-inducing chop

Read the full hazards ↓

Dive windows this week

Best: Mon
Sun6:00–20:00
Mon6:00–20:00
Tue6:00–20:00
Wed17:00–20:00
Thu6:00–20:00
Fri6:00–20:00
Sat6:00–20:00

Favorable windowModerate window— no window

First light 5:08 · Sunrise 5:35 · Sunset 19:23

Source: Open-Meteo marine · model point 2.8 km from site · graded 4h ago

Forecast only — always assess conditions on site.

Forecast · NOAA tide model

Tide & slack timing

Loading tide predictions

Recent diver reports

Dated firsthand observations from divers — not current conditions.

No diver reports for this site yet. — one dated observation helps every diver after you.

What Divers Say

Known for: Red snapper, Black sea bass, Great barracuda
Best time: Late spring through early fall on calm days, timed to the tide for best visibility

Based on community reviews and site data. Conditions vary — always verify before diving.

Best months, historically

What conditions have historically been typical at this site, month by month — not a forecast.

  1. Jan78%12°C0.8 m
  2. Feb69%14°C0.9 m
  3. Mar72%17°C0.9 m
  4. Apr84%21°C0.9 m
  5. May83%25°C0.8 m
  6. Jun84%28°C0.8 m
  7. Jul94%30°C0.7 m
  8. Aug81%30°C0.9 m
  9. Sep67%27°C1.1 m
  10. Oct61%23°C1.1 m
  11. Nov72%20°C0.9 m
  12. Dec61%15°C1.0 m

July hastypically had the largest share of favorable days here. Conditions vary year to year — this is historical context, not a forecast.

Based on 3 years of archive data. Bar height shows the share of days each month whose conditions have historically scored favorably.

Marine life seen at this site

Species noted at this site — not a promise of what you’ll encounter.

Species seen here

  • Red snapperCommonly seen
  • Black sea bassCommonly seen
  • Great barracudaCommonly seen
  • Atlantic spadefishCommonly seen
  • King mackerelOccasionally seen
  • Sandbar sharkOccasionally seen
  • Cannonball jellyfishSeasonal
  • Soft corals (gorgonians)Commonly seen

Fills & rentals nearby

No dive shops mapped within 25 km. Know one? Add it to the map.

Site details

An offshore reef area 17.5 nautical miles east of St. Catherines Island combining natural live-bottom ledges with added structure including the upright Coast Guard ship Sagebrush, subway cars, M-60 tanks and a Liberty ship. Bottom depths run 55-75 ft, and the coral-encrusted Sagebrush wreck is the signature dive, reached by roughly 1.5-hour charter runs from marinas such as Fort McAllister in Richmond Hill. Currents, thermoclines and changeable visibility (30-50 ft) make this comparable to Panhandle wreck diving.

boatreefwreck

Current on the wreck (anchor-line descents/ascents advised), jellyfish in the water column, thermocline around 35-40 ft, silt-out risk inside the wreck, seasickness-inducing chop

Reviews

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