G.P.T Marine · Key Largo & the Florida Keys
Expert Mobile Marine Mechanics & Boat Repair.
Here at G.P.T Marine, we take care of our clientele like no other mobile marine. Diagnostics, annual services, rewires, repowers, and more from our highly experienced technicians. No job is too big or too small — call us!
G.P.T Marine · 102125 Overseas Hwy, Key Largo, FL 33037, United States · 786-283-1472
Diagnostics
Engine & electrical troubleshooting
Mobile Dockside
Slips, lifts, marinas & ramps
Repowers
Outboard & engine installation
Rewires
Marine electrical & electronics
Florida Keys Marine Specialists
No Job Too Big or Too Small — Mobile Marine Service You Can Trust.
Here at G.P.T Marine, we take care of our clientele like no other mobile marine. Our highly experienced technicians handle diagnostics, annual services, rewires, repowers, and more — wherever your boat is in the Florida Keys.
Whether you need a mystery electrical fault diagnosed, a complete vessel rewire, a fresh repower, or an emergency callout to your vacation rental dock, we solve what other mechanics miss — and we treat every job with the same care, big or small.
From our Key Largo shop on the Overseas Highway to mobile service at your dock, marina, or boat ramp, we always go the extra mile to get you back on the water fast and running with complete confidence.
What We Do
Complete Marine Mechanical & Mobile Boat Repair.
G.P.T Marine provides expert diagnostics, annual services, rewires, repowers, general repairs & tune-ups, and mobile dockside service across Key Largo, Islamorada, Marathon, and the Florida Keys. Call 786-283-1472 — no job too big or too small.
Diagnostics & Engine Repair
Computerized diagnostic testing and expert repair for outboards and sterndrives. We track down elusive electrical, fuel, and mechanical faults that stump other mechanics.
Our highly experienced technicians pinpoint the real root cause fast, saving you from unnecessary parts and getting you back on the water.
Annual Services & Maintenance
Scheduled 100-hour and annual service, oil & filter changes, tune-ups, fuel system flushes, spark plugs, lower unit servicing, and corrosion protection.
Reliable, turn-key performance season after season — no job too big or too small for our crew.
Marine Rewires & Electrical
Complete vessel rewiring, custom backlit switch panels, Simrad & Garmin electronics integration, battery bank configurations, and clean saltwater-ready rigging.
Eliminate corroded terminals, shorts, and no-starts with clean, labeled, marine-grade backlit switchboards and wiring.
Repowers & Engine Installation
Full repower service — removing old engines and rigging fresh Mercury, Yamaha, or Suzuki powerheads and outboards with proper controls, fuel, and wiring.
A fresh, reliable powerplant installed and sea-tested by experienced marine technicians you can trust.
Mobile Marine & Dockside Service
On-water, dockside, and ramp service across the Florida Keys. Sea trials, on-site troubleshooting, and emergency callouts directly to your slip, lift, or rental.
No trailering hassle — we bring master-level tools and parts right to your dock, lift, or marina.
General Repairs & Helm Rigging
Helm control rebuilds, throttle and shift cables, steering systems, custom dash panels, pumps, and tune-ups that keep your boat running smooth and responsive.
Honest, fair-priced repairs that save your trip — we've rescued countless boaters on their Florida Keys vacations.
Need Diagnostics, a Repower, or Dockside Service?
Call G.P.T Marine. Whether your engine has a mystery electrical fault, you need a complete rewire or repower, or you need emergency mobile service, we respond fast with honest, experienced craftsmanship.
Why G.P.T Marine
Florida Keys Marine Service Done Right.
01
Highly Experienced Technicians
A crew boaters and vacation renters across the Keys turn to when other mechanics fall short — honest, timely, and genuine.
02
No Job Too Big or Too Small
From a single throttle cable to a full repower and rewire, we treat every job with the same care and fair pricing.
03
Mobile Dockside & Shop Flexibility
Need service at your dock, lift, or vacation rental? We provide mobile diagnostics, callouts, and shop repairs throughout the Keys.
04
Vacation Savers
Boat trouble on your Keys trip? We respond fast — often within 24 hours — to get you back on the water before your vacation ends.
How It Works
Getting You Back on the Water Fast.
01
Get in Touch
Call us at 786-283-1472 or visit 102125 Overseas Hwy in Key Largo with your boat details, symptoms, or service needs.
02
Expert Diagnosis
We run accurate diagnostics and hands-on inspections to identify the root cause without throwing expensive parts at the problem.
03
Fast, Turn-Key Service
Repairs, rewires, repowers, or annual service completed cleanly, honestly, and sea-tested for Florida Keys reliability.
Ready to schedule service or need dockside assistance? Call us at 786-283-1472 to get started.
Project Gallery
Mobile Marine Craftsmanship in Action.
Take a look at real diagnostics, annual services, rewires, repowers, and mobile dockside service handled by the crew at G.P.T Marine across the Florida Keys.
Customer Reviews
What Boaters Say About G.P.T Marine.
Verified 5-star reviews from private boaters, vacation renters, and Keys locals who count on G.P.T Marine.
"Saved us on a vacation trip to Marathon! Throttle and shift cables went out first day there, I called them late afternoon and they came in less than 24 hours to our air bnb and replaced the cables! Awesome guys and knew what they were doing! 100% would recommend"
Caleb Olney
"Great guys, Came from Georgia with my boat when it started having issues. I then Went to west marine to buy a fuel primer pump to see if I would resolve the issue with the"
Ejmax 21
"They are professional, offer expertise, and have great attention to detail. Their dedication to customer satisfaction, great pricing, and valuable maintenance make me highly recommend them as a choice for reliable marine repairs."
Valentina P
"Yosiel is an above and beyond mechanic. He is timely, honest, and genuine. It is refreshing to find honesty in this industry. His straight forward approach is beyond expectation. I could not be happier with my choice."
Dean Corey
"The best service the best solution for your boat, friendly staff, fair prices and instant solutions"
Linda Lopez
"Excellent work, very efficient and affordable prices. I recommend them 100%."
Dianelis Rodriguez
Follow G.P.T Marine on Facebook.
Check out our latest marine repair projects, customer feedback, and updates from the crew.
Need Expert Marine Service in the Florida Keys?
Tell us what is happening with your boat, outboard, wiring, or engine. G.P.T Marine is ready to assist at our Key Largo shop or mobile dockside at your slip or marina.
G.P.T Marine · 102125 Overseas Hwy, Key Largo, FL 33037, United States · 786-283-1472