Diamond's Edge Restaurant & Marina

$3.50/ft -$4.47 per/ft

Not Offered

Day Trip
Great Diamond Island
Portland, ME 04109
Check-in after 01:00 PM
Check-out before 11:00 AM
Book faster with the free Dockwa app
Marinas dark
5 Reviews

by summerbreak on Jul 24, 2021
Great stay and Chris the Dock Master was outstanding. Very accommodating and very customer focused.
Marina Response:
Jeff, is always a pleasure having you and the whole family on the Island. Thank you for your kind review.

by jak on Jul 19, 2021
Chris and John are excellent at their craft. Very helpful. Really enjoyed the comings and goings of the ferry.
Marina Response:
We are very glad you enjoyed your visit. Thank you for you review.

by kwoodbury11 on Jul 05, 2021
Diamond’s Edge Marina was amazing! Dockwa calculating the wrong dockage fee was our only issue.
Marina Response:
Thank you so much for your kind review. The Dockwa pricing issues, that under charged, have been corrected. We look forward to seeing you again soon.

by nchristopherperry on Jul 02, 2021
The dock manager was very helpful and friendly. They are a little short handed, but everything seemed to get done and I got all the help I needed.
Marina Response:
Thank you Chris. It is always a pleasure having you visit. We will look forward to more island stories on your next trip.

by dwaynefbickford on Jun 22, 2021
The dock master was rude and offensive. He asked us to tip the dock hand which we already had done. He then came to our table to confirmation our reservation which we did online. He again asked us to tip the dock hand. When we returned to our boat, he asked us again about tipping the dock hand. He was pleasant enough, but was extremely rude and intrusive by constantly chasing us down for the fee for stopping at the dock and tipping the dock hand. Unfortunately, I will not return there because of him. I guess the $250 lunch isn’t good enough.
Marina Response:
We sincerely apologize for any misunderstand during your recent visit. Recalling the conversation we feel it was misconstrued that we were seeking a gratuity, but rather the options available on Dockwa. We are committed to providing excellent service to all our guests, and we will review our communication guidelines with all staff members.

About Diamond's Edge Restaurant & Marina

Located at the northern end of Great Diamond Island, our 43 slip deep-water marina can accommodate vessels up to 110+ ft. Our private marina is available exclusively for guests at Diamond's Edge Restaurant, the Inn at the Diamond Cove, and all overnight boaters.

Visit the island to explore and take in 193 acres of spectacular natural landscape that inspires outdoor recreation and relaxation. The island is home to Diamond Cove, a small residential community that was a former military base built during America's Gilded age, the luxurious Inn at Diamond Cove, the highly-rated Diamond Edge Restaurant, and the Fort McKinley Museum.

All slip reservations include complimentary water and Wi-Fi, and access to shower and bathroom facilities. Please hail us on VHF channel 09 as you enter the harbor and we'll happily guide you to your slip. All dockage reservations will be processed through Dockwa.

All overnight guests have access to our complete resort amenities at the Inn at Diamond Cove including outdoor pool, tennis and basketball courts, bowling alley, access to Sea Glass beach, and more. We invite overnight guests to explore this secluded jewel and take in the island's 193 acres of spectacular natural landscape perfect for outdoor recreation and relaxing. With its spectacular sunsets, sheltered beaches, and acres of old-growth forest, this unique and historic location offers visitors an unparalleled opportunity to experience the tranquility of Maine island living.

We invite boaters to dock and dine at our newly renovated Diamond's Edge Restaurant featuring fresh, local New England favorites. If arriving by boat to dine at the restaurant, please book online via Dockwa and make note of your reservation time during checkout.

Booking Info

Please note, there is a 36 foot minimum. Max LOA 109 feet. Please make sure to update your vessel info - please round up to the nearest foot to avoid errors during the booking process

Day Trips:

Please be sure to message us to specify if you are restaurant guest, and what time you will be arriving for your reservation. Restaurant Guest (2-4 hours): $10 - Resident Guest (4-6 hours): $45 - Contractors (8 hours): $100

Overnight Transient Guests:

Up to 42': $3.50/ft/night - 43'-55': $4.00/ft/night - 56'-70': $4.25/ft/night - 71'-90': $4.50/ft/night - 91'-109': $4.75/ft/night


  • Water
  • Electrical


  • Floating Docks
  • Hotel/Lodging
  • Ice
  • Launch Service
  • Restrooms
  • Restaurant
  • Security
  • Showers
  • Swimming Pool
  • Wireless Internet
  • Pet Friendly



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