Jacksonville · Duval County · NE Florida

Jacksonville boaters,
Nereus knows these waters.

From the St. Johns River to Mayport to Amelia Island — get real AI diagnostics trained on NMEA-certified field data, tide-aware navigation intel, and a network of verified local marine pros.

24/7
Nereus Online
0
Certified Pros Local
Free
Always
N
Nereus
Trained for Jacksonville waters
Hey Jax boater. Tell me what's going on — electronics issue, St. Johns River bar crossing, bull red run at the jetties, or Mayport basin rules. Real answers, not generic search.
Running from Mayport out to the offshore ledges — what should I watch?
The Mayport bar and St. Johns River mouth can get nasty on an outgoing tide with any onshore wind — that stacks steep square seas right in the channel. Time your exit on slack high or incoming tide if possible. Heading to the offshore ledges (16-22 miles), watch the afternoon thermals build in summer. The carrier traffic near Mayport is active — stay out of restricted zones. Commercial shipping comes through the St. Johns at 10+ knots so keep clear of the channel. What depths are you targeting?
// Local Intel

What Nereus knows about
Jacksonville waters.

Not just generic AI. Nereus is trained on the specific hazards, regulations, and local quirks that matter to Northeast Florida boaters.

🌊

Duval Waters

St. Johns River, Mayport, Atlantic, Amelia River, St. Augustine Inlet, Ortega River. The river currents, bar crossings, and bridges that matter.

  • St. Johns River bar & Mayport
  • Amelia Island & Fernandina
  • St. Augustine Inlet tides
  • Ortega River bridges
🎯

Fishing Grounds

Offshore ledges, bull reds at the jetties, cobia migration, and Amelia Island jetty fishing.

  • Offshore ledges (16-22 mi)
  • Bull red spawn at the jetties
  • Cobia migration timing
  • King mackerel & snapper regs

Marine Regs

Duval County and FWC-specific rules. Mayport Naval Station restricted zones and what Marine Patrol watches.

  • Duval manatee zones
  • Mayport basin & restricted zones
  • Ortega River idle zones
  • Required safety gear by vessel size

Electronics & Engines

Garmin, Simrad, Raymarine, Furuno, Yamaha, Mercury — brand-specific diagnostics from an NMEA-certified knowledge base, not a spec sheet.

  • NMEA 2000 network troubleshooting
  • Chartplotter & radar setup
  • Outboard overheating & impeller
  • Trim/tilt hydraulic issues

Weather & Hurricanes

Jacksonville storm surge, Atlantic hurricanes, nor'easters. Nereus helps you decide when to pull, when to run, when to stay.

  • Downtown Jax surge forecasts
  • Marina hurricane plans
  • Nor'easter heavy surf closures
  • Cold front offshore patterns
🏢

Service & Storage

Dry storage, wet slips, haul-out yards, and mobile mechanics. Nereus connects you to verified Jacksonville-area businesses when you need hands-on help.

  • Local haul-out capabilities
  • Mobile mechanics who come to your dock
  • Bottom paint & hull service
  • Emergency towing (Sea Tow, BoatUS)
// Jacksonville Marine Pros

Verified pros.
When you need hands-on help.

When Nereus identifies something that needs a real pair of eyes, we connect you to certified marine businesses serving Jacksonville, Orange Park, and Amelia Island.

Run a marine business in Duval?

Get listed as a verified BoaterAI partner. Nereus recommends your shop to local boaters who need help — by name, mid-conversation.

List Your Business →
// Common questions Jacksonville boaters ask

What your neighbors
are asking Nereus.

• New from BoaterAI

Your boat talks. Now you can listen.

The BoaterAI diagnostic device plugs into your NMEA 2000 network and feeds Nereus real-time data from every device on board. Coming soon — join the waitlist.

Learn More →Join Waitlist
● Live Data Preview
BATTERY
12.8V
RPM
3,200
Garmin GPSMAP 8616
Mercury Verado V8