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Located in Seattle, Fife, Bellingham, Issaquah & Pacific


Union Marine’s mobile service vans and boats are equipped with state-of-the-art diagnostic equipment to help get you back on the water quickly and safely.

Whether your boat needs to be serviced dockside or valeted back to our shop, our mobile, factory-trained and certified master technicians are here to help. Plus, we charge the same labor rate for mobile service as our in-house service department.


  • Routine Maintenance
  • Warranty Repair
  • Winterization
  • Marine Electronics Installation
  • Belts, Hoses, Fluids
  • Battery Replacement
Certified Technicians
Mobile Marine Service Mobile Marine Service


  • sunday Closed
  • Monday 8:00 AM - 5:00 PM
  • TUESDAY 8:00 AM - 5:00 PM
  • WEDNESDAY 8:00 AM - 5:00 PM
  • THURSDAY 8:00 AM - 5:00 PM
  • FRIDAY 8:00 AM - 5:00 PM
  • SATURDAY Closed

Marine Engine Maintenance & Warranty Service

Regular maintenance and service of your boat is crucial to extending the life of your investment and minimizing frustrating weekends on their boat. We’re proud to be a factory trained and certified team ready to provide the best customer service and expert maintenance and warranty repair for the following fine brands.

  • MasterCraft
  • Sea Ray Boats & Cruisers
  • Bayliner Boats
  • Boston Whaler
  • Nautique
  • Bennington Pontoon Boats

Vessel Winterization

Proper preparation & winterization of your vessel is critical to ensuring that your engine and its critical components survive the freezing winter temperatures unscathed.

As part of this service, we’ll add fuel stabilizer to your fuel to preserve it during the winter months —which can save on costly bad fuel disposal in the spring, if not treated. Then we’ll run your boat on our brine mix of oil and fuel to ensure all the internal fuel regulating components are coated with a thin layer of oil to keep the from getting gummed up while in storage.

Marine Electrical Repair & Installation

From Satellite TV systems, to On-Board Wifi, Radar Systems, Auto-Pilot, and more, we’ve seen just about every component possible to install on a boat.

We’d be happy to ensure that however “Smart” you choose to make your vessel, that everything is installed perfectly and works with your existing systems and components before heading out on the high seas, or the Saturday wake surf session.

Fiberglass & Gel Coat Repair

Hit the dock and need a little fiberglass repair? It happens to every boater at some point. Have no fear though, we’ve seen and fixed it all and our expert team will have your boat fiberglass and gelcoat looking like nothing ever happened.

Prop Repair

A ding in the prop can not only rob your boat of its top performance, it’ll rob your wallet by reducing fuel efficiency, or even causing damage to your engine and outdrive.

If you have prop damage, schedule an appointment at one of our 3 convenient service centers, or we can come to you with our Mobile Service program and ensure that your vessel is in top shape for your next voyage.

Boat Trailer Sales & Repair

Union Marine is an authorized sales and service dealer for EZ Loader trailers. EZ Loader provides quality and fine workmanship that is found under the most well-known boats in the Marine Industry.

They are the only manufacturer to offer a boat trailer to fit every need here in the Pacific Northwest: Adjustable, Aluminum, Galvanized and Powder Coated.

Have a Question? Call Today!