Diamond's Edge Restaurant & Marina

85 Reviews
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Great Diamond Island
Portland, ME 04109
43° 41' 5.03'', -70° 11' 28.91''
207-766-5694
VHF Ch. 9
$3.50/ft - $4.75/ft
diamondsedgerestaurantandmarina.com
Long Island
Diamond's Edge Restaurant & Marina
Diamond's Edge Restaurant & Marina
Diamond's Edge Restaurant & Marina
Diamond's Edge Restaurant & Marina
Diamond's Edge Restaurant & Marina
Diamond's Edge Restaurant & Marina
Diamond's Edge Restaurant & Marina
Diamond's Edge Restaurant & Marina
Diamond's Edge Restaurant & Marina
Diamond's Edge Restaurant & Marina

Awards


Boaters Choice 2021Boaters Choice Elite Fleet 2022Boaters Choice 2023

About


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.

Berth Capacity


Slips:43
Linear Docks:150 Feet

Approach


Minimum Approach Depth:14.0 Feet
Minimum Channel Depth:30.0 Feet
Mean Low Water Dock Depth:0.0 Feet
Mean High Water Clearance:0.0 Feet

Services & Amenities

Last Updated: Jan 16, 2024

Dockage:Yes
Water Hookup:Yes
Transient Storage:Yes
Long Term Storage:Yes
Water Taxi:Within 5 Miles
Dinghy Dock:Yes
Restrooms:Yes
Showers:Yes
Trash:Yes
Ice:Yes
Security:Yes
Swimming Pool:Yes
Groceries:Within 5 Miles
Alcohol:Yes
Hotels:Yes
Restaurants:Yes
Beach:Within 5 Miles
Pet Friendly:Yes
Tennis:Within 5 Miles
Max. Vessel LOA:110.0 Feet
Max. Slip Length:84.0 Feet
Max. Slip Width:20.0 Feet
Floating Docks:Yes
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Verified

The marina is in great condition. We are always treated warmly at both the marina and the restaurant. Food is consistently excellent. Dan and Jane

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Bad. Dock was not stable, screws proud of boards. Failed even to have the courtesy of responding to a refund request that the dock master encouraged me to make.

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Verified

Docking at Diamond Cove was great. Chris, the dock master, was always helpful.

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Verified

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Verified

The restaurant was great. The Dockwa app we had to use as a private boat owner was cumbersome and confusing. We were told at the restaurant that we could get the dock fee refunded since we ate at the restaurant. When we contacted Dockwa we were very rudely told that they never give free dock space and no one at the restaurant would ever tell a diner that they would. It was an unnecessarily negative interaction. Obviously we had been given incorrect information. It could have been relayed to us much more positively. Very unprofessional. Our meal at the restaurant was lovely

Marina Response:
Hi Richard. We do not allow any vessels to dock for free. You requested, and were approved for a 2 night stay in the marina. You accepted the charges associated with a 2 night stay. We are not sure where you heard that dining in our restaurant would allow free overnight dockage, but this has never been, and will never be, our policy. Most of our guests appreciate the ease of using the Dockwa App. We are not sure why you had difficulties, but feel free to share your confusion so that we can address any issues with the App. We are glad you enjoyed the restaurant, and your 2 night stay on the island.
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Verified

The Marina wasn’t very busy but they were courteous in directing us to the slip

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Verified

Very friendly and accommodating! Dockwa made it very way to reserve and the marina was great!

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Verified

Always friendly and helpful

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Verified

The view was beautiful and we had some help getting into our slip. If you have a dog, it is a walk to get to a grassy area. The marina has shower and bathroom facilities but they are also a considerable walk and when a wedding is taking place, you will not have a private space as the shower is clear glass and out in the open area of the shared bathroom. So while it is an absolutely beautiful location, it’s services that it lists are not easy to access. I highly recommend eating at the Crown Jewel. Amazing food!

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Verified

Dockmaster Chris is an awesome guy. Super helpful.

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Verified

Chris was, as usual, helpful and engaging even though we arrived with other boats needing assistance with tie-ups.

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Verified

Great location and setting , great restaurant service, fantastic dockage service, really nice slip. The only negative was the food for the price was a C-.

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Verified

Just recently visited to celebrate my mothers 70th birthday. From start to finish - as always - the experience was fantastic. Chris the marina manager started us off with a warm welcome to our slip - and the restaurant manager (who I failed to get the name of but wish I had) and the entire restaurant team went out of their way to ensure we had the exact table and setting on the lawn that we wanted. Everyone bent over backwards to ensure the celebration was perfect. And it was. I’ve written positive reviews before - and know I will continue to do so in the future. To anyone reading this and wondering - whether it’s a short stay, or an extended one - Diamond Cove might just be one of the most welcome sights to any captain and crew. Visit, enjoy, and soak it in. The beauty of the place itself is only eclipsed by the kindness and professionalism of the team that runs it. Cheers. Jameson Smith & Family // M/V Luna II

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Verified

Dock person was having trouble with his VHF

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Verified

Easy to book a slip and assistance getting in. Very good experience.

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Verified

Peaceful and beautiful island. Great marina.

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Verified

Great marina. Friendly staff!

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Verified

Dockmaster Chris was excellent!

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Verified

Great stay and Chris the Dock Master was outstanding. Very accommodating and very customer focused.

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Verified

The staff at the dock was amazing! Thanks you.

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We only docked at the marina. There was a wedding at the Edge. Chris at the marina gets 5 stars though! :)

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Verified

Very nice service! Easy walk to restaurants

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Verified

Our party was met at the dock by Chris and his staff, smiling and ready to catch lines! The slip space was conveniently located close the ramp. We had a great stay.

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Verified

The dock staff was extremely helpful, informative, and professional. We will return as it was a true pleasure to stay here.

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Verified

Chris the dock master was terrific. It was very busy with boats arriving for dinner and he took the time to make sure we were properly tied up, had shore power, etc.

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Verified

Great marina for a visit!!

Marina Response:
Thank you for taking the time to review our Marina. We are glad you enjoyed your visit.
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Verified

Perfect. Nice dinner and great dock help.

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Verified

The dock master was great, very helpful

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Verified

the dockmaster was excellent, we had a nice comfortable slip. The bathroom and cold shower was .25 miles away, making it a Half Mile round trip . There was no hot water in the bathhouse. The Island is private, so there were no trails or roads to walk on, the Inn had a pool, but it was for guests of the Inn only. The WIFI was down on the docks, and there was no cell service, but I did not expect that anyway. The restaurant was excellent, well worth the price, and service was very good.

Marina Response:
Hi James. We are glad you enjoyed part of your visit. Please excuse any inconvenience that created a less than stellar stay. The new WIFI system arrived today, and will be up soon. Our showers simply tossed a breaker and we did not know until after your cold experience. The Diamond Cove side of the island is mostly private. This does limit access to most of our trails. However, there are miles of roads, and trails, on the public side of the island. We will add this info to our marina greeting. Our Inn pool is just for registered guests. We truly appreciate your feedback, and hope to do better on any future visits.
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Verified

The dockmaster, Chris, was terrific! The only reason this didn't get a 5 star rating was that our dining experience at Diamond's Edge was disappointing. Nice trails for walking.

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Verified

Great marina. Chris is a super helpful and friendly dockmaster. Beautiful island to explore

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Verified

Easily accessible and nicely maintained. Great spot on Casco Bay.

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Verified

Nice Marina, and dock master.

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Verified

Excellent service. This survey is ridiculous to require a longer answer.

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Verified

Great experience. Worked seamlessly.

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Marina was a good experience. Spacious slip well attended by dock staff, easy communication

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Verified

Nice marina and dock master was very helpful. We did have to wait a few minutes to get in - but the dock master took care of it promptly.

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Verified

Great help, easy access, nice experience

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Verified

Aiden was very nice and capable.

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Verified

Great place for lunch, easy to dock, Food, and service at the Diamound's Edge restaurant. The docking manager/dock hand is accommodating and pleasant. Tom Santospago

Marina Response:
Great review. Thank you for taking the time to share your experience.
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Easy in easy out with great help from friendly dock staff

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Lovely & well run marina as always!

Marina Response:
We are very pleased that you enjoyed your visit. Thank you for the 5 star review.
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Verified

Friendly dock master. Great help. Quite harbor. Added bonus poor cell service so you can really not be bothered.

Marina Response:
We appreciate your 5 star review, and your enjoyment of no cell signal. The Cove is surrounded by forested hills. Perfect place to dock, not so good for cellular signal. Thank you.
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Verified

Wonderful place and so pretty. It would be a 5 star if they had wi-fi. Cell service is almost zero.

Marina Response:
We are glad you enjoyed your stay. Our management team is currently updating the WIFI service to the Marina.
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Verified

Super helpful and friendly staff

Marina Response:
Thank you for the 5 star review. We are very pleased that you enjoyed your visit to Diamond's Edge Restaurant and Marina.
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Verified

Great experience. Was ready to receive us as we approached and helped tie up. Marina is a little tight but plenty of room.

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Verified

Nice small marina. Super helpful dock hands

Marina Response:
Thank you James. We are pleased to see our efforts appreciated.
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Verified

Dockmaster helpful and professional

Marina Response:
Thank you for taking the time to review our Marina. We appreciate your 5 star rating.
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Verified

Fabulous place, super friendly!

Marina Response:
It is always a pleasure having you and your crew in our Marina Chip. Thanks for the positive review.
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Verified

Friendly staff and calm marina

Marina Response:
Thank you for sharing your review of our Marina. We are glad you enjoyed your visit.
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Verified

Nice dock facilities, very helpful staff.

Marina Response:
Thank you James for posting your review. We appreciate your comments.
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Verified

Great dinner, great service both at restaurant and dock staff.

Marina Response:
Great review. We appreciate you taking the time to post about your positive experience.
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Verified

Very helpful staff.

Marina Response:
Thank you Don. We are pleased that you received great service.
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Verified

The dock person was very friendly and helpful.

Marina Response:
Thank you for this review. We are always striving to make our guests feel welcomed.
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Verified

Nice sheltered cove. The dock master was experienced, knowledgeable and very helpful!

Marina Response:
We are very pleased that you enjoyed your stay at the Cove.
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Verified

Great staff. Accommodating and very welcoming.

Marina Response:
Our best compliment is when you feel welcomed in our Marina. Thank you for the great review.
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Verified

Dockmaster was incredibly helpful, professional and courteous. Glad we stopped and will return!

Marina Response:
Thank you Soll. We hope to see you again soon.
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Verified

Excellent service at a the Marina!

Marina Response:
Our crew is very appreciative of your review.
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Verified

easy to work with every time I have been there there were open slips and very easy to reserve the dockmaster was exceptional as well

Marina Response:
Thank you for your kind words and 5 star review.
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Verified

We visit Diamonds Edge often and have never had a problem. Works like it’s supposed too👍

Marina Response:
We are very pleased that you always have an excellent experience while visiting our Marina.
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Verified

Easy in and out slips

Marina Response:
Thank you for the 5 star review. We hope to see you again soon.
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Verified

Great service and very friendly dock manager. Would highly recommend a stop in.

Marina Response:
Hello Jim. We appreciate you taking the time to pass along your positive experience about your visit. We hope to see you again soon. Thank you for spreading the good word.
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Verified

Excellent communication. Welcomed us at the slip.

Marina Response:
We are very pleased that you had a great visit to the Island. Thank you for your 5 star review.
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Verified

for the price you don't get very much

Marina Response:
Hello Andrew. As a seasonal tenant please feel free to communicate with our Dockmaster to address any needs of yours that are not being met. Our 2023 seasonal contract should cover what is provided. Thank you for this feedback. Let us know how we can improve our service.
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Verified

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.
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Verified

Nice place and a great dinner.

Marina Response:
We are very pleased that you enjoyed your visit. Thank you for the 5 star review.
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Verified

great people, the island is beautiful, views amazing and its so peaceful .The Ferry or water taxi options are great for Portland.

Marina Response:
Thank you Jim for the positive review. It is always a pleasure having you visit Diamond Cove.
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Verified

Great marina and location for visiting GDI. Chris the manager and all other staff were helpful and a pleasure to talk with. Can’t wait to go back.

Marina Response:
Our team is very pleased to hear you enjoyed your visit to Diamond Cove. Thank you for sharing your experience.
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Chris, the Dockmaster was very helpful and friendly. We ate at the Diamond's Edge Restaurant and the food and drinks were excellent. Very positive experience.

Marina Response:
Thank you very much for your positive review of our Marina and Restaurant.
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Verified

Great service at the marina and great service at the restaurant. The drinks were tasteless and the food was 3 stars at best. Next time we will bring food and grill on the boat.....

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Verified

Actually, 4.5 stars. Lovely, lovely spot on this earth, like no other. Not 5 only because not well set up for the cruiser crowd....no W/D, showers a bit of a hike. Dockmaster Chris quite helpful and friendly, restaurant 4.7. Will definitely be back.

Marina Response:
We are pleased to hear you will be returning to Diamond Cove.
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Diamond's Edge is an incredible stop. The island itself combined with the hospitality makes it a real gem and a stop we like to make at least once every year.

Marina Response:
Thank you so much for your 5 star review.
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Three friends and I dined at Diamond's Edge this past Friday night. The dockmaster was exceptionally helpful and friendly. The dining experience - on the lawn - was fantastic from start to finish. Highly recommend Diamond's Edge to all my friends.

Marina Response:
We are very pleased that you enjoyed your visit to Diamond's Edge. Thank you for the positive review.
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Verified

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.
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Verified

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.

Marina Response:
Thank you for a wonderful review of our Marina.
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Verified

We love coming in to Diamond Island. It is one of our favorite trips. Chris, the Dockmaster, is always accommodating. It is always a great dining experience at the Inn restaurant, and enjoy the amenities at the hotel.

Marina Response:
We are very pleased that you enjoyed your stay in the Marina. We look forward to having you visit again soon.
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Verified

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.
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Verified

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
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Verified

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.
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Verified

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!

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Verified

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.
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Verified

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.
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Verified

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.
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Verified

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.
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Verified

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.
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