Great Diamond Island
Portland, ME 04109
Dock
$3.50/ft -$4.47 per/ft
Mooring
Not Offered
Day Trip
$10 - $80
Book faster with the free Dockwa app
115 Reviews
by Jeff O. - Verified user on Sep 23, 2024
Great stay the Dock Master was outstanding. Very accommodating and very customer focused.
by Heidi I. - Verified user on Sep 09, 2024
it was seamless! Friendly, helpful staff.
by Lawrence G. - Verified user on Sep 05, 2024
Great cove! Nice setting. Quiet night. A raccoon left his mark on the dock!
by Michael M. - Verified user on Sep 05, 2024
Excellent visit. Everyone was friendly and responsive. Rooms clean, and meals were delightful. Recommend without reservation.
by Lori B. - Verified user on Sep 03, 2024
Amazing staff! Thank you Max!
by David D. - Verified user on Sep 01, 2024
The dock service was very helpful.
by David L. - Verified user on Sep 01, 2024
Staff was excellent
Marina Response:
Thank you for the kind review, we’re glad you enjoyed your stay.by Nick M. - Verified user on Aug 31, 2024
Great time the tuna was not good but the issue was resolved.
by William M. - Verified user on Aug 29, 2024
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!
Update: A year later, another visit, and another great experience. The marina manager always makes the process so easy, and it is such a great location.
Update 2.0: Another year, another great experience at Diamond's Edge.
Marina Response:
Thank you for a wonderful review of our Marina.by Daniel W. - Verified user on Aug 24, 2024
The facility, the people, the beauty - all outstanding. Couldn't ask for anything better. Chris was outstanding and sooo helpful. Goes above and beyond to accommodate you....
Marina Response:
Great review. Thank you for taking the time to share your experience.by Roger W. - Verified user on Aug 23, 2024
Wonderful place! Max at the dock greeted us and was awesome!
by John L. - Verified user on Aug 19, 2024
Simon the dock person was excellent and the accommodations were great
by Darcy S. - Verified user on Aug 18, 2024
Nice floating docks, subject to some waking when boats or ferries pass by. Staff very nice, restaurant ambiance very nice, food was so so. Next time we will try Crown Jewel or eat at the inn. Loved the history of Fort Mckinley and especially enjoyed the golf cart history tour by Ben; fabulous researcher and historian. Diamond cove inn looks like a fabulous place to stay and very historical!
by Andreea R. - Verified user on Aug 18, 2024
Smooth docking, helpful attendant
Marina Response:
Thanks for the positive review, Andreea! Hope to see you on the docks again soon!by Matt J. - Verified user on Aug 17, 2024
Zac on the dock was fabulous.
by Elliott C. - Verified user on Aug 15, 2024
Easy, great communication.
by Mary C. - Verified user on Aug 08, 2024
Easy in and out. Very helpful dockhands
by Lee R. - Verified user on Aug 08, 2024
The dockhand Hayden was very helpful!!
by Robert W. - Verified user on Aug 05, 2024
Helpful and friendly service at the dock - great experience - thank you.
by Buzz S. - Verified user on Jul 31, 2024
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. Update July 2024. The 50 amp gfci is set way too low. We travel a lot and this is the only place we have problems and as witnessed while we were there other boats had same problems .You claim it’s new and safety issues but I don’t agree. However Simon did a great job moving us around until we connected. Dock staff is very helpful! We had dinner at both restaurants which were very good but at Diamonds Edge we waited 25 minutes for our first cocktail. Other than that service and food were very good. The Crown Jewel is really good all around. We have had pool access in previous years but not this year. The pool was pretty much empty of people the times we walked by. It’s nice to have if you’re there for multiple days. We would probably not return unless the electric gets fixed. Too bad. Great spot and great dock staff.
Marina Response:
We are so glad you enjoyed your visit to Diamond Cove. Our team truly appreciates your kind review.by Glenn P. - Verified user on Jul 29, 2024
Marina was great. Max and staff were friendly and helpful.
by Sheila S. - Verified user on Jul 28, 2024
Awesome staff! Went the extra mile for us to find butter on the island after we forgot to pack it. Gorgeous views and a very peaceful spot.
by Constance M. - Verified user on Jul 28, 2024
Very helpful. Smooth all around.
by Trescott H. - Verified user on Jul 28, 2024
We had a great visit to the Marina yesterday. Max was very helpful and friendly. We will definitely be visiting again soon.
by Thomas D. - Verified user on Jul 25, 2024
Our slip was ready when we arrived. The dock person was very helpful . all went well
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 105 ft. Our marina is available for guests at Diamond's Edge Restaurant, the Crown Jewel, the Inn at 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’s Edge and Crown Jewel Restaurants, 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
- 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.
WEEKDAY
- LOA
- 0' to 22' $10
- 22' to 45' $15
- 45' to 80' $30
- 80' to 101' $80
WEEKEND
- LOA
- 0' to 22' $15
- 22' to 45' $20
- 45' to 80' $45
- 80' to 101' $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
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