About 3 Marine Mobile KW

Built for the Keys. Built to Work.

3 Marine Mobile KW was started for one reason: boaters in the Florida Keys deserve a certified mechanic who shows up when they say they will, fixes the right problem, and charges a fair price. That's it. No corporate fluff, no upsell playbook, no waiting room magazines.

Our team grew up around boats and trained through factory Mercury Marine programs, earning full certification as Mercury technicians. That means access to the CDS G3 diagnostic platform — the same tools Mercury dealers use — and the technical knowledge to use them correctly. When your outboard throws a code or won't start clean, a certified tech with the right equipment finds the cause in hours, not days of trial and error.

The mobile model exists because it makes sense for how Keys boaters actually live. Hauling a boat in the Keys is expensive, time-consuming, and often unnecessary. We load the truck with the right tools and come to your dock — marina slip, residential canal, mooring field, wherever. You keep working. Your boat gets fixed.

Mercury Certified — What That Means for You

Not every mechanic who works on Mercury outboards is certified. Certification requires passing Mercury's technical training and demonstrating hands-on competency on their engines. It means our team carries Mercury's OEM diagnostic software, not a generic scan tool. It means service is performed to Mercury specifications — which matters for warranty, resale value, and engine longevity.

3 Marine serves the full Lower Keys and Middle Keys corridor: Key West, Stock Island, Big Coppitt, Sugarloaf Key, Cudjoe Key, Summerland Key, Big Pine Key, and Marathon. If you're not sure if we cover your area, call — we'll tell you straight.