Great Island Boat Yard cares for 200 boats and keeps over 100 in the marina for the summer. We are the only boat yard in Quahog Bay, offering a full range of services, including Yanmar service and parts, and boat storage. From away? Over half of our customers come to us from other New England states. A parade of boats makes the 120-mile trip between Great Island Boat Yard and the Cape Cod Canal every spring and fall. Leave your boat with us in Harpswell this winter and begin your summer cruise next year from one of Maine's most beautiful harbors. We paint, repair, repower, and "refit” dozens of boats annually.
Services Include: Rigging, Mechanical, Electronics, Electrical, Plumbing, Refrigeration, Carpentry, Glass Repair, AWLGRIP, Varnish & Paint, Canvas, and Fabrication.
• 65 Slips
• Max vessel - 70'
• 10' MLW depth at end
• 15, 30, 50A Service
• 45 Moorings
• Max vessel - 75'
• 10-14' MLW depth
• 74,400 Sq-Ft Inside Heated
• 1,500 Sq-Ft Inside Cold
• 200 vessels stored
• 7 Acres
• 800' Waterfront
Any time:
• Max 70'
• Max 50 Tons
• Max 8' 7" Draft
By Appointment:
• Max 130'
• Max 300,000 Lbs
• Max 8' 7" Draft

News From Great Island Boat Yard

GIBY's NEW Big Rig

Great Island Boat Yard

Great Island Boat Yard has just taken delivery of a NEW 60-ton hydraulic trailer, built by Hostar Marine. This new piece of equipment supports GIBY's continued growth and expands the yard's ability to handle larger vessel traffic. Typical refit and service projects at GIBY are on boats in the 45'… MORE INFO

Refinishing & Customizing New Sabre 66 Hulls

Great Island Boat Yard

GIBY painted two brand-new Sabre 66 hulls this fall. While the second vessel was in our care, the GIBY fiberglass and metal teams also cut, manufactured, and installed custom side-entry hull doors and fabricated metal rails to accommodate the alteration. The doors were painted, mounted, and aligned before the carpentry… MORE INFO

Outfitting an Outremer 59 5X

Great Island Boat Yard

An Outremer 59 5X travelled from Florida to Maine this summer to tackle several significant projects. The GIBY team addressed an extensive summer punch list - performing over 200 hours of work - to bring the boat up to its new owner’s specifications. During the visit, the new boat owner… MORE INFO