Old Harbor Marina

Old Harbor Marina

Old Harbor Marina in Clinton, CT is a top-notch marina offering comprehensive services for boats, including repairs, installations, and maintenance by experienced technicians. With easy access to Long Island Sound, staying at this marina is both comfortable and convenient. The facility has 24-hour camera surveillance and gated security for guests' safety. During their stay, visitors can enjoy amenities like showering and restroom facilities, as well as cable TV. Old Harbor Marina is an ideal choice for a relaxing weekend on the water.

Winterization Services 2024

Inboard/Stern Drive Engine

  • Winterize engines
  • Add Fuel Stabilizer
  • Oil & Filter change
  • Change transmission oil
  • Change saildrive oil
    Oil analysis (at time of oil change only)
  • Remove outdrives and store
    Change gear oil, lubricate, sand, prime and paint outdrives and change zincs​
  • Change engine zincs
  • Change fuel filters​

Outboard Engine

  • Winterize engines
  • Change gear oil
  • Add Fuel Stabilizer
  • Test fresh water coolant freeze point on engines
  • Oil & Filter change
    ​Oil analysis (at time of oil change only)
  • Change engine zincs​
  • Change fuel filters

Additional Winterization Services

  • Winterize generator
  • Change generator oil
  • Service bow thruster
  • Winterize toilets
  • Deodorize holding tanks
  • Winterize holding tanks
  • Winterize water system
  • Winterize air conditioning
  • Service & disconnect batteries and open seacocks
  • Winterize ice maker
  • Winterize washing machine
  • Winterize salt water washdown/live wells
  • Replace cutlass bearings
  • Recondition props
  • Store outriggers


  • Remove antenna, canvas, and outriggers 

What We Offer

Amenities & Services

  • Old Harbor Marina

Wet Slips

Old Harbor Marina offers over 100 slips that can accommodate power boats up to 46 feet in length. Each slip features upgraded shore power and fresh water hook-ups.

  • Old Harbor Marina

Winter Storage

At Old Harbor Marina we take pride in making your boating experience as enjoyable and turnkey as possible. Our well trained operations staff will see that you and your boat are well cared for at anyone of our locations!

  • Old Harbor Marina

Boat Winterization

The “off-season” gives customers a chance to upgrade, change, or repair aspects of their boats. We offer a variety of services. We will haul out your boat, winterize it, store it, and put it back in the water in the spring.

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Engine Repair

We offer high quality boat repair and maintenance services for all types of boats including sailboats, power boats, and PWCs. Our team of professional technicians are experienced in all major engine and sterndrive manufacturers.

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Outboards Motors

If your boat needs its outboard engine repaired, you want a boat mechanic who can fix it right the first time. After all, your engine is the heart of your boat. It needs regular checkups and, sometimes, major repairs.

  • Old Harbor Marina

Inboard Motors

Inboard engine repair for marine vehicles is something that takes experience and know-how to be able to do correctly. We pride ourselves in only hiring the most qualified technicians to ensure high quality repairs and service maintenance.

  • Old Harbor Marina

Shrink Wrapping

Make sure that they can withstand what’s coming. Our expert shrink-wrapping services ensure that rain, sleet, or snow won’t negatively impact your marine vehicles. Call Old Harbor Marina to inquire about our affordable rates and reserve your winter storage spot today.

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Repowering Services

Old Harbor Marina has a fully equipped repowering and rigging shop. We can replace a shroud, modify the backstay, make a whole new set of standing rigging, or new lifelines with gates. If you are in need of quality repowering and rigging services contact us today.

  • Old Harbor Marina

Electronics Repair & Install

Inboard engine repair for marine vehicles is something that takes experience and know-how to be able to do correctly. We can install nearly any type of marine electronics you need for your boat. We can help pick out your equipment, determine the best mounting locations and install the equipment with a professional, custom look.

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Boat Painting

Bottom Painting is a critical component of your boat’s maintenance plan. A clean hull is safe, fast and efficient, and a fouled bottom cuts your top speed, damages maneuverability and lowers your fuel economy.If you are painting a boat and need help and advice, then ask our experts to ensure that you protect your boat with confidence.

  • Old Harbor Marina

Detailing Services

Boat detailing packages using the most advanced products on the market are available. In the summer sun, your boats exterior needs continuous care to maintain its appearance. A monthly washing and quarterly waxing schedule keep your boat looking good and preventing a costly repair to re-finish the boat due to sun damage.

  • Old Harbor Marina

Power Washing

Old Harbor Marina recommends power washing at least once throughout the season, as this will prevent bottom drag and increase fuel economy. Most boaters are surprised by the dramatic change in performance by simply power washing. Call us today, contact us online or just stop in to schedule your power washing cleaning today.