Big Coppitt Key is mostly canal-front homes with a boat lift in the backyard — which means most of the boats we service here never leave the dock to get fixed. We come down the canal, park at your seawall, and go to work.
The commuter-boat problem
A lot of Big Coppitt boats aren't weekend toys — they're how people get to work, to the backcountry flats, or out to Sugarloaf and beyond. When that boat won't start on a Tuesday morning, hauling it to a shop across town costs you the whole week. A dockside diagnostic visit usually gets it sorted the same day the tools show up.
What we fix in Big Coppitt Key
- Mercury diagnostics & repair — computer diagnostics, scheduled maintenance, lower unit and fuel system service. See Mercury Diagnostics & Repair.
- Engine repair & overhaul — compression and leak-down testing, head gaskets, cooling system work, powerhead rebuilds. Details: Engine Repair & Overhaul.
- Marine electrical — corrosion is relentless on canal-front boat lifts; we handle wiring, batteries, charging systems, and electronics. Full list: Marine Electrical Services.
No trailer, no tow, no lost weekend
Boat lifts make hauling awkward and often unnecessary. We bring the shop to the lift — diagnostic tools, common parts, and a technician who knows what he's looking at before he opens a panel.
Book Big Coppitt Key service
Big Coppitt sits close to Key West on our route, so same-week (often same-day) appointments are typical. Call or text (305) 832-1206, email info@3marinekw.com, or book online.
Keep your boat in the water. We'll come to you.

