Providing the best marine services throughout the Chesapeake Bay Region for over 50 years.


Providing the Chesapeake Bay region’s best boat and motor services begins and ends with one thing – our people and their dedication to always do what’s right. Tri‑State Marine prides itself on providing the absolute best in marine services, which has been achieved through the continuity of our expert management and certified factory-trained service technicians — many have whom have been with Tri‑State Marine for more than 30 years!

But, don’t take our word for it, simply ask our customers or look to the many customer satisfaction awards that we’ve earned. Most recently we achieved Grady-White’s highest honor, Admiral’s Circle for Excellence in Sales and Service, our 25th consecutive year, and we have achieved a 9.76 rating (out of 10) on Grady‑White’s 3-year average Customer Satisfaction Index. Also, you can rest comfortably knowing that we’ve been an exclusive partner to Yamaha Motors for 37 years. We are 5-Star Gold Certified and a Pro Elite Dealer, placing us in the top 3% of all dealers nationally and the ONLY dealer in Annapolis/ Chesapeake Bay area that has achieved this prestigious dealer rating, with only the best factory trained technicians, including their highest certified honor, master service technician.

While we’re honored to receive such high praise, we’re most proud of the quality of our customer service. When combined with the quality of our work, it provides you with the experience that you would expect while giving you the confidence to comfortably and safely enjoy your days on the water. And when the season ends for some of you, we take incredible care of your investment during the offseason — whether it’s decommissioning and storage or if you have off-season plans for work that you’d like us to perform on your behalf.

No matter your needs, Tri‑State Marine provides you with the best service at competitive rates. To schedule a service, please call our Service Department directly at (410) 867-1960 or complete our Online Service Request form.


Service & Repairs

Tri-State Marine’s expert service team are trained to correctly diagnose issues, advise you of any developing problems, and address any unique service issues your boat may require. Whether you need complex Yamaha motor work and repairs by a master service technician, canvas and upholstery custom work or repairs, fiberglass repair, electronics installation or repair, or simply detailing your boat to take it back to near showroom condition, our technicians will work quickly to get you back on the water, where you’d much rather be.

Many of our industry leading services are included below, please contact us if you have any other needs.

  • Exclusive Yamaha Motor Repairs / Warranty
  • Yamaha Outboard Repowers
  • Preventative maintenance
  • Winterization
  • Winter & Year-round storage
  • Bottom Paint & Recommissioning
  • Water Pump Replacement
  • Shrink wrapping
  • Boat Detailing
  • Fiberglass and gelcoat repair
  • Inflatable Fabric and Boat Repair
  • Custom canvas
  • Garmin Electronics installations & Repair
  • Boat Trailer Service
  • Local hauling and launching
Schedule a Service
  • Outboard Repower

    As the Chesapeake Bay region’s top Yamaha authorized dealer and service department with 5-Star Gold Certified status and a Pro Elite Dealer, placing us in the top 3 percent of all Yamaha Dealers in the United States., you can trust in our team to deliver your boat new power to enjoy for many years to come. We exclusively sell and install Yamaha motors for a reason: For more than 30 years, Yamaha Outboards have delivered far more than superior power, performance and efficiency. Yamaha owners get something that can’t be measured in HP or RPM — with legendary Yamaha reliability, purpose-built from the ground up to withstand the rigors of offshore boating. Learn more about your Yamaha Repower options here.

  • Marine Electronics

    Tri-State Marine offers expert sales, installation and repair of the industry’s best marine electronics, exclusively from Garmin Marine. We pride ourselves on being the region's leading Garmin Marine dealer, and offer Garmin's full line of electronics. Not sure where to begin? Not to worry, our sales team will advise you on the perfect pairing of Garmin’s advanced marine electronics to your needs — Chartplotters, Fishfinders, Transducers, Sonar, Radar, Wearables and the industry’s best marine audio from Fusion Audio Entertainment. Our expert service technicians then ensure proper installation and testing — even high-level training to get you up and running quickly!