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

13 Reviews

by ekszycnkkxzoa2mhhqly on Sep 06, 2021
Chris on the dock was the best and more than helpful. Restaurant soo much better than last time which was before Covid. The walking map very helpful in understanding where the permitted places were to walk. Street names would be helpful on the map. The lady at the inn fixing our bagel breakfast could not have been nicer. She made our morning. Good job to all.
Marina Response:
We are so glad you enjoyed your visit to Diamond Cove. Our team truly appreciates your kind review.

by melissak on Sep 03, 2021
Amazing, secluded little spot. Food and drinks at Diamonds Edge restaurant are phenomenal. The dock master Chris is friendly, helpful and accommodating. The inn is beautiful and we’ll probably stay a night or two next year to break up a long boat vacation. My only complaint is there is limited hot water if someone is in both the men’s and women’s showers. You might end up running out so best to put some time between showers.
Marina Response:
Thank you for your 5 star review of Diamond's Edge Marina.

by wmimikos on Aug 22, 2021
As always, this is one of the most pleasant marinas to pull into. They're always waiting for you to arrive and ready to help you dock. And it's such a beautiful location with great food and fun beaches!
Marina Response:
Thank you for a wonderful review of our Marina.

by xb9zsbcz_51tckxd9vta on Aug 19, 2021
Great small marina with two good restaurants a short walk away. Note-No WIFI or cell service. Chris Johnson, the dock manager, is the best!!
Marina Response:
Our team appreciates your positive feedback. Thank you

by wps on Aug 18, 2021
Chris and his team were very helpful/responsive in getting us situated on the island. Thanks for a great experience.
Marina Response:
Thank you so much for sharing your experience with other boaters. We strive for the highest level of hospitality.

by gf4306 on Aug 12, 2021
This location is absolutely beautiful. Small protected cove, very close to Portland. The amenities are limited...no wifi, spotty cell service, bathrooms are quite a long walk. The residents of the island do not want marina guests to walk around. You are required to request a golf cart ride up to the Inn to use the pool. Chris is a very pleasant and customer service oriented manager. He does a great job! Also, skip the Diamond's Edge restaurant and eat at Crown Jewel instead where the food outstanding!

by pvisich on Aug 08, 2021
Wonderful help on and off the dock.
Marina Response:
Thank you so much for your positive review. It's nice to hear that our efforts are appreciated. We hope to see you again in the Cove.

by aequitas on Jul 31, 2021
Great marina, friendly dockmaster. Great dining nearby and nice trails for walking.
Marina Response:
Thank you for your great review. We hope to see you again soon.

by summerbreak on Jul 24, 2021
Great stay and Chris the Dock Master was outstanding. Very accommodating and very customer focused.
Marina Response:
Jeff, it 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 your 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.

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

  • 36 foot pricing minimum on all reservations
  • 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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