Diaz Marine is Florida’s MJM Yachts Dealer

From sales to service, we are here for you.

Diaz Marine/MJM Florida is located in Miami, FL, providing services to the entire state, the Caribbean as well as Central and South America.  We are dedicated to the support and satisfaction of ourcustomers. Adding value and providing the best customer service is the beginning of your MJM Yachting experience and our clients are obviously very important to us. If you’re not satisfied, we’re not satisfied!

MJM Yachts was founded in 2002 by Bob Johnstone, who 25 years earlier co-founded J. Boats, Inc.  Along with seaworthiness and ease of handling, performance has been a main objective of the company. MJM Yachts offer significantly lower operating costs than similar boats of their size, using approximately half the fuel.

MJM Yachts is committed to environmentally responsible yachting and boat building.  Great satisfaction is derived from being an owner of an ECO-FRIENDLY and GREEN technologically advanced MJM Yacht, spending half the time and dollars at the fuel dock and thus doing your part in preserving the environment for future generations.


Meet our seaworthy team.

Augie Diaz

Email: augie@diaz-marine.com

Ana Sowers,
Sales and Client Services

Email: ana@diaz-marine.com

John Hayden
Sales Manager

Email: john@diaz-marine.com

Captain Ruben Quintana
Service Manager & Captain

Email: ruben@diaz-marine.com



We are proud to offer the following services to our customers:

Boat Yard Services

Bottom Painting
Zinc Anode Service and Replacement
Cutlass Bearing Service and Replacement
Propellor, Shaft, Strut, and Rudder Repair & Maintenance

Brokerage services

Contact us for more information.


Shipside Power Diagnostics/Repair
Battery & Charging
Navigation Systems
Satellite TV and Phone
Engine Room Ventilation
Shore Power
All 12, 24, and 36 Volt Wiring
Monitoring & Alarms

Financing options

We work with multiple lenders to find the right financing option for you, so we can get you out on the water in your MJM Yacht.

Hurricane Preparation

Vessel preparation for high winds
Weather monitoring and necessary alerts
Routine system checks during the season
Insurance procedure documentation


Full Service Diesel and Gasoline Engine Repair
Generator Service
Fuel Systems
Bow Thrusters

Mooring options

Convinced an MJM Yacht is the yacht for you, but don’t know where to berth it? We can help.


All Fresh Water Systems, including Pump Wash-Downs
Sanitation Systems
Deck Drains/Scuppers
Livewell Systems
Bilge Pump Systems

Safety Inspections

Systems Checks
Condition Reports
Safety Recertfications

Sales and Service to all cities in Florida

Miami • Fort Lauderdale • Key Largo • Key West • West Palm Beach • Fort Myers • Port Charlotte • Bradenton • St. Petersburg • Tampa • Melbourne • Lakeland • Kissimmee • Orlando • Titusville • Daytona • Daytona Beach, Ocala • Gainesville • Jacksonville • Tallahassee • Panama City, • Fort Walton Beach • Pensacola and any city in between.

Sea Trials

Survey Sea Trials
Fueling – Fuel Polishing
Equipment Checks/Safety Survey

Training Options

With all of these highly seasoned and experienced crew mates, you’re sure to pick up a thing or two about how to handle yourself on the water.

Yacht Demonstrations

Come see what really sets an MJM Yacht apart from the rest. We believe that once you experience being onboard one of these yachts, you will also be convinced that MJM Yachts makes a truly superior product.

Click here to set up a demonstration day with us.

Have a question?

We would love to hear from you!

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