Marine Service

Our Marine Service on Cape Cod Includes:

Our hassle free marine service on Cape Cod includes but is not limited to:

• Complete outboard engine repair and repower

• Yamaha and Mercury factory-authorized service

  • Repower Center

  • Yamaha 5 Star Key Dealership
  • Mercury Marine Full Line Dealership
• Marine Electronics Installations
  • Certified NMEA Garmin & Raymarine Installers

• Diagnostic testing with the latest OEM tools

• Scheduled maintenance programs

• Fuel system cleaning and troubleshooting

• Electrical system repair and rewiring

• Steering and control system service

• Trim, tilt, and jack plate repair

• Haul-outs, blocking, and launch services

• Minor fiberglass and gelcoat repairs

• Canvas and Eisenglass work

• Battery testing, replacement, and charging systems

• Installation of accessories and electronics

• Pre-season and mid-season safety checks

Winterization, Storage, and Off-Season Care

Servicing your boat over properly at the end of the season protects your investment and makes spring commissioning easier. Our off-season services include:

• Full winterization of engines and systems

• Fuel stabilizing and fogging

• Draining and protecting freshwater systems

• Battery removal, testing, and storage

• Shrink-wrapping and blocking

• Secure winter storage with regular checks

If you are unsure what your boat needs, our Service Team is happy to recommend the best off-season plan based on how and where you use your boat.

Qualified Master Technicians

Outermost Harbor Marine is proud to be a Yamaha Certified Master Technician and a Mercury Premier Dealer. Our technicians complete ongoing factory training and use genuine OEM parts, giving you dealership-level expertise with the personal service of a local Cape Cod marina.

Whether it is troubleshooting a hard-to-find issue, repowering or rebuilding outboards, or preparing your boat for the season, our team treats every boat as if it were our own.

Extensive OEM Parts Inventory

Our Parts Department maintains a deep inventory of Yamaha and Mercury OEM parts, lubricants, filters, rigging components, and common wear items. If a part is not in stock, we can source most items quickly so your repairs stay on schedule.

Boat and Motor Repair Options

In addition to repairing engines, Outermost Harbor Marine also offers various other services. We have a skilled fiberglass and gelcoat crafter on our staff who can do wonders in repairing damage and imperfections on boats. We also have a great partnership with a local eisenglass & canvas company. From haul-outs and blocking to shrink-wrap, bottom work, and seasonal commissioning, we handle the details so you can spend more time on the water and less time worrying about maintenance.

Boat Cleaning and Detailing

We also offer professional boat cleaning and detailing services, from quick washes to full interior and exterior detailing. Ask us about in-season cleanings, pre-sale detailing, or getting your boat looking its best before launching.