6 Boat Yard Rd
East Hampton, NY 11937
Dock
Offered
Mooring
Offered
Day Trip
Not Offered
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92 Reviews
by Jeff B. - Verified user on Aug 22, 2026
Nice location. Challenging docks and tie up.
by Tamara W. - Verified user on Aug 22, 2026
We were on a strong mooring in an unexpected storm on the Sound. Had to find refuge. Truly grateful!
by Kevin C. - Verified user on Aug 22, 2026
The marina location is the farthest from the Mohring field, so be sure to bring your own dinghy.
The staff was not helpful. I had to press her to find a location where I could simply drop off luggage. The best spot to drop off luggage is a public dock on the left fork as you approach this marina. The public dock is actually passed the marina slips.
by Steve H. - Verified user on Aug 21, 2026
Only disappointment was there brochure said they had floating docks. We were on a fixed dock
Marina Response:
Hi Steve, thank you very much for your 5-star review! We apologize for the miscommunication regarding the dock types. We take reservations for all four of our marinas in Three Mile Harbor through this one Dockwa page. While three of our locations offer floating docks, we assigned you to Halsey's Marina, which only provides fixed-pier docks. Next time you come to stay with us, please let us know if you have any preferences or requests in the "Special Request" field when making your reservation. We will also make an internal note to ensure you are on a floating dock for future reservations. We hope to accommodate you on one of our floating docks sometime soon!by Phil T. on Aug 19, 2026
Peter and staff are the best. Blew an idler pully they located part nearby i picked it up tech stayed late on a Friday. Got me back in the game in no time. Thanks again hmguys for a great stay.
Marina Response:
Hi Phil, thank you very much for your review! We're glad we were able to assist you with the repairs. The Harbor Marina crew is very appreciative of your kind words. We hope to welcome you back to Three Mile Harbor soon!by Richard M. - Verified user on Aug 16, 2026
Pick up stick was easy to grab. Mooring was easy to find and lines in great shape.
by Richard V. - Verified user on Aug 09, 2026
Helpful in tie up. Idyllic locale
by Lois S. - Verified user on Aug 06, 2026
Our stay was excellent. Everyone was friendly and helpful. Restroom etc were very clean and seemed new.
Marina Response:
Hi Lois, we're glad to hear that you enjoyed your stay! We take pride in providing clean, well-maintained facilities for all of our boaters. We hope to welcome you back to Three Mile Harbor again in the future. Happy boating!by Maria R. - Verified user on Jul 26, 2026
It was a beautiful stay and so much to do if you choose to ..
by Robert F. - Verified user on Jul 21, 2026
Expensive for what you got.nice area though
by Peter G. - Verified user on Jul 19, 2026
Really friendly staff, great clubhouse and bathrooms, super clean
by Glenn S. - Verified user on Jul 13, 2026
As always - great time at 3 Mile! Always a great place to relax and enjoy the beautiful bay!
by Malina P. - Verified user on Jul 13, 2026
Beautiful spot, well placed and maintained mooring balls, spotless marina facilities.
by Angela R. - Verified user on Jul 12, 2026
Very nice weekend! The marina is very informative and the mooring is nicely maintained and spaced out.
by Gary K. - Verified user on Jul 12, 2026
Rented a mooring. The people at 3 mile harbor were very nice and went out of there way to be helpful. Used the shower facility, it appeared brand new and was very clean.
The only suggested improvement is the dinghy dock. It is floating plastic modules. Very tricky to walk on.
by Richard D. - Verified user on Jul 10, 2026
Spotlessly clean, friendly staff, transients welcome.
by Troy C. - Verified user on Jul 08, 2026
First of all, we went there for the Fourth of July: only later to be told that they ONLY celebrate Bastille Day (a French holiday) on 11 July 26.
Dinghy docks are dangerous (& shouldn't be used) there are empty slips use them for transient boaters' dinghies.
Over $80 for an Uber only 1 way.
Mooring aren’t safe, only mushroom anchors (not set) rated for 20 kts: almost every T-storms has winds above that!
When checking out to buy ice-cream: I was asked, so many questions as to be ridiculous. When did I arrive, how long am I staying, where we came from etc, etc.
Never felt welcomed.
Boat store was well stocked! Nice area, where the dog could run: but not fenced in. Marina lounge was extremely NICE & had a/c.
Plus at $100 a night: it was the most I have ever spent on a mooring in my whole LIFE. Then The FACT that to do laundry is an additional $10 per day is CRAZY: why?
So disappointed by this place.
Marina Response:
Dear Mr. Cain, we’re sorry to hear that you did not enjoy your time staying with us on our transient moorings. We wish we could have had the opportunity to work with you while you were here to address your concerns. - The Three Mile Harbor fireworks show is put on by the Clamshell Foundation, a local non-profit organization that has historically always done the fireworks show the weekend after the 4th of July. However, on the Friday and Saturday of the 4th weekend while you were here there were multiple fireworks shows in the area, including in Sag Harbor and at the Devon Yacht Club which can be driven to by boat, and at East Hampton main beach in town. - We are aware that the dinghy dock is wobbly and we have made changes to make it more stable. Per the information in our pre-arrival email we do have a floating dock slip that is designated for dinghies, that we could have pointed out to you if you had raised your concerns with us while you were here. - Unfortunately, we cannot control the Uber pricing, which can be high at peak times, especially on Holiday weekends like the 4th of July. - The transient moorings are heavy duty 500lbs mushroom anchors, which are advertised as such on our Dockwa page and in our pre-arrival email. We comply with East Hampton Town code and remove, inspect, repair, and reset the moorings annually. Our policy is to not provide moorings in storm wind conditions (20kts or greater) only to boats larger than 50ft or rafting vessels. We believe these are sensible precautions to ensure the safety of our boaters and our moorings. - Our staff are trained to be friendly and curious when our transients come into the store. We apologize if the conversation we had made you feel uncomfortable, it was certainly not our intent. We’re happy to hear that you enjoyed the clubhouse lounge and our ship’s store, as well as the public park next to our marina with your dog. - Our prices are posted and clearly communicated throughout the reservation process. Transient moorings are expensive to maintain and keep in tip-top shape. We believe that our rates are fair considering the amenities included with the stay, and that laundry access on site for an additional $10/day is reasonable. - We wish that we could have made your stay with us more enjoyable while you were here, and we’re wishing you safe travels for the rest of your boating season.by James H. - Verified user on Jul 05, 2026
Quiet, well appointed and welcoming staff. Trifecta
by Bob K. - Verified user on Jun 23, 2026
We stayed at Halseys. It’s one of the quietest and most beautiful spots we’ve ever been and the Dockmaster (Lester) is the best.
by Andrew M. - Verified user on Jun 10, 2026
Great facility and staff. Beautiful harbor.
by jeffrey D. - Verified user on Jun 07, 2026
Great spot great staff! Will be back
by Charles I. - Verified user on May 26, 2026
The place is beautiful and the Dockmaster Les is great
by Tracy M. on Oct 10, 2025
Lovely mooring. We didn’t use their other services.
by justin M. - Verified user on Aug 18, 2025
We stayed at the Halsey Marina in 3 Mile Harbor. Small, quaint and beautifully maintained! Clean, quiet and relaxing. In addition the service by the Dockmaster and experienced Captain, Les, and his dockhand was exceptional. We will try to stay there anytime we are in that harbor!!
by David J. - Verified user on Aug 18, 2025
Beautiful mooring field, easy to access and friendly staff at the marina. Thank you for a great visit. So nice to have a mooring vs anchor option for an overnight stay. We will be back soon.
About East Hampton Three Mile Harbor Marinas and Moorings
-- New LOWER Rates for Transient Dockage 2026! --
Seacoast Enterprises Associates is a family business that owns and operates four marinas and the only 7 transient moorings in Long Island's East Hampton Three Mile Harbor. Of the four marinas: Harbor Marina, Halsey’s Marina, Gardiner’s Marina, and Three Mile Harbor Marina, each location provides a different set of amenities and experiences. The East Hampton and Amagansett villages are a short car ride away, home to renowned beaches and restaurants. All marina locations have trained staff on-hand ready to assist boaters, provide access to electric and water hookups, and free WiFi.
Harbor Marina is the first marina at the entrance of Three Mile Harbor. The marina’s waterside restaurant "Bostwick's On The Harbor" provides a lovely sunset dining experience. Harbor Marina is a full service marina with floating docks, dry rack, and a fuel dock that sells ValvTect branded gasoline and diesel. There is a ship’s store on location that offers a wide variety of goods, from tackle and bait to gifts and ice cream.
Halsey’s Marina is located in the southern half of the harbor. The marina has fixed docks, a quaint clubhouse with bathrooms, showers, and laundry, and a picnic area with grills. The basin is surrounded by nature preserves on three sides and affords peaceful natural views. The quiet and private atmosphere of Halsey’s Marina resembles a picturesque yacht club setting.
Gardiner’s Marina is located in the southern half of the harbor. The marina basin is newly-renovated, creating a larger space for more comfortable maneuvering into and out of slips. Gardiner’s Marina has bulkhead slips with floating finger piers, a modest clubhouse with bathrooms, showers, and laundry, a picnic area with grills, and allows for parking behind your boat. The marina’s close proximity on the west side to preserved wetlands offers uniquely beautiful views of the local environment.
Three Mile Harbor Marina is a full service marina and boatyard located in the southern end of Three Mile Harbor. Three Mile Harbor Marina provides slips in season, and year-round vessel storage and certified service for Mercury, Volvo Penta, Yamaha, and more. The marina has floating docks, a handicap-accessible clubhouse with bathrooms, showers, laundry, and grills. There is a ship’s store on location with an array of boating necessities including ice, snacks, bait, engine parts, and more.
The 7 transient moorings are 500lbs mushroom anchors located in the main deepwater mooring field of Three Mile Harbor. A stay on the transient moorings includes complimentary access to the dinghy dock and clubhouse at Three Mile Harbor Marina. The protected harbor provides calm waters, a dedicated watersports area, and lots of fellow boaters enjoying the Hamptons atmosphere. Please be aware that there is no launch service in Three Mile Harbor and it is a no-discharge zone.
Transient boaters are received in season between the operating hours of 8:00 am and 4:00 pm, 7 days a week. Check-out time is 11:00 am, check-in time is 1:00 pm.
Booking Info
- If you prefer a specific marina location, please let us know in the “Special Request” field and we will try our best to accommodate.
- Check-out time is 11:00am, Check-in time is 1:00pm.
- Hail the marina on VHF Channel 9 when entering Three Mile Harbor to allow staff to prepare for your arrival.
- Holiday Weekends require a 2 night minimum stay (Memorial Day Weekend, Fourth of July Weekend, Three Mile Harbor Fireworks Weekend, and Labor Day Weekend. Weekends include Thursday, Friday, Saturday, and Sunday nights).
- If you are traveling in a group, please confirm dates at least 30 days in advance or as soon as possible. We will try our best to accommodate based on availability.
- Day Trips are not accepted.
Services
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