John’s Mobile Marine Service LLC
Location: Annapolis, MD 21401
John’s Mobile Marine provides fast and reliable service in the Baltimore MD, Annapolis MD, and Washington DC areas. Servicing even far beyond the general listed area Johns Mobile Marine comes to you for your boats Diagnostic repair & Maintenance!
Services:
- Boat Service
- Marine Audio
- Boat Cleaning
- Boat Winterization
- Boat Drive Service
- Marine Electronics
- Boat Mechanic
Full Keel Marine Services
Location: Annapolis, MD 21401
Located in Annapolis, MD, Full Keel Marine Services is a leading provider of mobile-marine service solutions using diesel engines and power generation systems, to the recreational and commercial marine markets. With over 30 years of experience, our factory-trained technicians represent industry-leading brands including Volvo-Penta, Seven Marine, and Phasor Generators. Member ABYC.
Services:
- Boat Service
- Boat Winterization
- Marina
- Boat Welding
- Boat Mechanic
- Boat Motor Repair
- Marine Generator Repair
Petersen Marine Service
Location: Baltimore, MD 21230
Petersen Marine Service, LLC has enjoyed an excellent reputation in and around Baltimore for over 15 years. We tackle any problems, issues or renovations you have with your boat. Our reliable and skilled team of technicians are here to help. Our ABYC certified technicians are experts in Gas and Diesel engines, HVAC, Electrical, Electronics, Plumbing and Sanitation. Our technicians come to you in fully equipped workboats eliminating all additional costs for travel, parking and tolls.
Services:
- Boat Service
- Boat Drive Service
- Marine Electronics
- Boat Mechanic
- Boat Motor Repair
- Boat Repair
- Boat Drive Repair
Gili's Automotive
Location: Rockville, MD 20852
Services:
- Boat Service
- Boat Mechanic
- Boat Repair
- Marine Diesel Mechanic
- Marine Diesel Repair
- Diesel Generator Repair
- Diesel Generator Mechanic
Hild's Marine Services Inc
Location: Pasadena, MD 21122
Services:
- Marine Diesel Mechanic
- Diesel Generator Mechanic
- Diesel Generator Repair
- Marine Diesel Repair
Chaos Fab Shop
Location: Winchester, VA 22602
Services:
- Marine Diesel Mechanic
- Diesel Generator Mechanic
- Diesel Generator Repair
- Marine Diesel Repair
- Boat Welding
- Custom Metal Fabrication
- Pontoon Repair
Portside Marine LLC
Location: Annapolis, MD 21403
Services:
- Boat Service
- Boat Repair
- Boat Mechanic
- Marine Diesel Mechanic
- Diesel Generator Mechanic
- Diesel Generator Repair
- Marine Diesel Repair
Ranglin's Complete Auto Care
Location: Manchester, MD 21102
Services:
- Marine Electronics
- Marine Electronics Installation
- Marine Electronics Repair
- Boat Lighting
- Boat Satellite TV
- Boat Stereo Installation
- Marine Audio Installation
My Mechanic
Location: Randallstown, MD 21133
Services:
- Marine Electronics
- Marine Electronics Installation
- Marine Electronics Repair
- Boat Lighting
- Boat Satellite TV
- Boat Stereo Installation
- Marine Audio Installation
Featured Reviews for Marine Diesel Repair Pros in Frederick
Mobile Motorboat Mechanics
Brett S
April 20, 2022
“These guys scheduled me quick so didn't have to wait long for my appointment. The mechanic was on-time, very helpful and knowledgeable. He fixed my issues quickly and offered to order an additional part that I needed. I highly recommend using Motorboat Mechanics for your boat repair needs. I will NOT use anyone else moving forward!“
Rocket City Marine
Lonnie F
February 20, 2025
“I had Zach service my outboard motor, and I couldn’t be happier with the experience! He changed all the fluids, filters, spark plugs, and even replaced the water pump, while also providing thorough engine diagnostics to ensure everything was running smoothly. Zach showed up right on time, was incredibly pleasant and professional, and finished the job with impressive efficiency. His attention to detail and expertise really stood out. I’d highly recommend Zach to anyone needing top-notch service.“
MDR Diesel and Boatworks
Adam P
December 16, 2022
“I've have companies work on my boats before....but nobody compares to MDR Diesel and Boatworks. I've never had anyone put so much effort and attention to detail to ensure I stay up and running. They are meticulous and professional in their work, ensuring everything is completed thoroughly and correctly. MDR will be the only company working on my boats from here on out. Thank you!!!!“