Boat Repair Services in Miami Beach


Miami Beach is packed with boats and yachts.  It’s hard to find a more idyllic boater’s playground.  This means there are quite a few boat mechanics and marine repair shops about too.

But how do you sort through them all to find a comprehensive team of marine professionals that can produce excellent work and provide an elevated experience?

Admittedly it can be challenging.  And the risk of getting it wrong could leave you missing out on weeks of on-the-water time.

Here is a glimpse of how we at Onyx approach delivering superior boat repair services in the Miami Beach area.

Our mobile master mechanics, electricians, and marine technicians come to your dock, marina, or boatyard for fast and convenient services anywhere in the Miami Beach area. Our diverse team provides services for vessels from 14’ to 114’.  Onyx believes in making boat ownership easier with elite services coupled with extensive marine expertise, whether you need a quick tune-up or complete refit.

To help you better understand our scope of mobile boat repair services and how we support our Miami Beach boat owners with personalized professional service, we’ve outlined our most popular services below.

Marine Outboard and Diesel Engine Repair

Outboard Services—Our Miami Beach mobile marine mechanics repair most marine outboard engines, including Mercury, Yamaha, and Suzuki.  They can efficiently identify and solve overheating or starting problems as well as more complex intermittent performance issues.  Common tasks our mechanics can help you with include:

  • Oil, filter, sparkplug changes
  • Scheduled 50/100/300-hour maintenance
  • Lower-unit servicing
  • Propellor repair or replacement
  • Troubleshooting and repair
  • Trim and Tilt
  • Fuel system
  • Steering systems
  • Gauges, alarms, and senders

For Marine Diesel Engines and Generators—Onyx’s highly skilled mechanics make getting your boat serviced simply by coming to your dock, marina, or boatyard. Our full-service mobile marine mechanics can help you with everything from monthly maintenance to complete repowers.

We service most marine diesel engines, including Yanmar, Cummins, MTU, and Caterpillar.

We also service most marine generators, including Onan, Kohler, Northern Lights, and Westerbeke.

Providing expert mechanical knowledge, professional working experience, and clear communication is part of the Elevated Experience we provide to all our boat owners. That means we give you a complete report of what we did, recommendations, and photographs to illustrate our findings.  Plus, if we are installing new equipment on board, we schedule a visit with you to get one-on-one training with a professional so you can feel confident using your new equipment.  Frequently requested marine diesel services include:

  • New marine diesel engine installations
  • New marine generator installations
  • Engine alignments and motor mount repairs
  • Exhaust manifold servicing
  • Fuel, oil, and air filter changes
  • Belt tensioning and changes
  • Valve adjustments
  • Diesel diagnostics
  • Generator output diagnostics and repair
  • Scheduled maintenance plans

Miami Beach’s Marine Mechanical Repair Specialist

Your vessel has many complex systems onboard.  And many of them are interfaced in at least some way which makes having a reliable, comprehensive marine service that can handle all your boat repair and upgrade needs a considerable benefit. 

Onyx provides the Miami Beach area with an extensive range of marine mechanical repairs, including hydraulic, fuel, steering, and running gear services.  Our mobile team can come to you or work with several boatyards near the Miami Beach area.  We have technicians and mechanics specifically skilled in:

  • Hydraulic steering
  • Steering cable and fitting replacements
  • Hydraulic dinghy lifts, winches, windlasses, and hatches
  • Install and repair hydraulic pumps, lines, and fittings
  • Change and repair fuel line fittings and hoses
  • Servicing fuel and water separators and filters
  • Installing tank gauges, sensors, and senders
  • Running gear repair (shafts, shaft logs, cutlass bearings)
  • Engine alignments
  • Propellor repair and repitching services
  • Anode replacements
Miami Beach-powerboat navigating channel

Mobile Marine Electrical Repair

Onyx’s mobile marine electricians service all of the Miami Beach areas and take on jobs ranging from as simple as installing a new breaker to as complex as completing yacht rewiring projects.

Our marine electricians are not only highly skilled so that they can quickly troubleshoot your boat’s electrical problems but provide exceptional workmanship and professional service, making the experience effortless for our boat owners.

Some of our most common electrical requests include:

Battery and Charging Systems—Install new battery or charging systems, troubleshoot charging and voltage irregularities, or maintain existing systems. Installing and repair of battery monitoring systems, inverters, and battery banks.

Wiring and Rewiring—boat wiring repair, adding new electrical components or rewiring the vessel.

Electrical Panels, Fuses, and Switches—Enhancing marine panels to accommodate new equipment, troubleshooting blown fuses or faulty switches.

Installing Bonding Systems—properly bonding vessels to prevent galvanic corrosion and damage to underwater metal hardware.

For each visit to your vessel, you can expect to receive a report that clearly explains what we found, our recommendations, and what we did. Where needed, we will use photos to illustrate.

In addition, as part of our Elevated Experience, we provide a one-on-one scheduled session with you to go over any newly installed marine electrical equipment so you can feel confident operating your vessel.

Marine Painting and Fiberglass

From repairing cosmetic fiberglass damage to renewing the life of your boat with a professional paint job, Onyx has the talented experts to make your vessel flawless.

We use industry-standard products and techniques to restore your boat’s finish. 

We also have a working relationship with local boatyards and can help you with your bottom jobs and antifouling painting services.  Smaller boats on a trailer can be painted at our nearby workshop facility.

Miami Beach—boats traveling under the causeway

Custom Marine Lighting and Entertainment Systems

Specialty marine lighting and custom marine sound systems can transform the mood aboard. 

Work with Onyx’s marine lighting architectural services for distinctive tailored designs. They can help you create enchanting underwater lighting or mood-enhancing deck lighting.  Our specialist can redesign your interior lighting to create an inviting atmosphere, improve task lighting, and install safety lighting—like stair tread lights and engine room lights.

For the ultimate experience, our marine technicians can install or upgrade your boat’s marine audio system. They provide an ultra-clean installation for entertainment systems, surround sound systems, and waterproof stereo systems.

Marine Electronics and Wi-Fi Solutions

Onyx’s Elevated Experience promise includes scheduling complimentary sessions with the boat owner to learn how to use any newly installed electronics or navigation equipment.  It’s our way of supporting you to master your skills and confidence on the water as the boat owner.

We can help with installing or upgrading most of your marine electronics.  Plus, we can maximize the benefit by integrating them with other electronics and your boat’s systems.

Some of the most common Marine Electronic services we provide in Miami Beach are:

  • Marine radio installations (VHF radio, SSB transceivers, AIS transponders)
  • Marine antennae installations
  • Marine Wi-Fi domes and Marine Wi-Fi boosters
  • GPS Chart plotters
  • Radars
  • Fish finders
  • Autopilots
  • Vessel Monitoring Systems and Alarms

On-Demand Captain Services and Yacht Maintenance

Going a step beyond providing comprehensive boat repair in Miami Beach, we also support boat owners with scheduled maintenance and boat detailing packages so that your boat is clean and ready for the water at any time.

We also provide boat owners in the Miami Beach area with on-demand Captain and Crew services.  Our professional, vetted crew can be hired for as short as an afternoon or longer-term assignments.  We also have boat delivery services and instructional captains for hire.

Supporting the Miami Beach Boating Community

We love the boating lifestyle here in Miami Beach and are proud to be part of the community.  The easy access to the ICW and the Atlantic Ocean provides unlimited boating activities and events—like the Miami Boat Show, which brings some of the most prestigious yachts parading through our waters every year.

Whether going deep-sea fishing, dropping the hook for the afternoon, or entertaining friends and enjoying the fantastic Miami Beach skyline from the water, Onyx would love to help you make the most of your time on the water

If you need boat repairs in the Miami Beach area—or would like to talk to us about any of our other services—we’d be delighted to hear from you.