Diamond Marine
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Diamond Marine
For over a decade, Diamond Marine has been breaking new ground in bringing to the boating community a wide selection of very competitively priced new and pre-owned boats, backed by a commitment to outstanding customer service and support. We also specialize in international sales and shipment of vessels, and our in-house service department offers expert service, repair and maintenance for all leading motor/vessel manufacturers.

We invite you to visit our gigantic 40,000 square-foot indoor showroom - the largest in the North East!
Services
At Diamond Marine, we've consistently outperformed our competitors for a number of very good reasons, and our customers have benefited as well. First, we have developed very good relationships with our new boat manufacturers. We buy all of our vessels outright, verses on consignment, which gives us a tremendous price advantage that we can pass on to our customers.
Our huge Indoor Showroom (the largest in the Northeast) lets you comparison shop a wide range of new and used vessels. Diamond Marine supports its customers with an expert Service Department and Parts Group. Our technicians, with over 25 years experience, are qualified to repair and service all makes of outboards, inboards, and IO's.
At Diamond Marine, we are boating and watersports enthusiasts, and there's nothing we enjoy more than helping our customers find the kind of fun and adventure that a quality boat can bring. If you're considering financing a new boat from quality brands like Yamaha, you're in good hands with our finance department.
Venture Trailers are engineered for quality, performance and function. All components on our trailers, work together to give you a smooth ride, as well as make loading and launching your boat easy and convenient. Venture Trailers strives to provide you with the best value in the industry. Diamond Marine is the largest stocking dealer of Venture trailers, which lets us offer same day pick-up on most available models.
At Diamond Marine we buy boats of all kinds including sports cruisers, powerboats, bowriders, cuddys, pontoon and deck boats as well as trailers and motors. Our greatest asset is our flexibility. We buy from both new and used dealer inventories, private individuals, repossessions, and auctions. We make it easy and painless for you to sell your boat without the hassle of involving a broker or dealer.
Reviews (14)
Eric Schaefer
Eric Schaefer
Jan 11, 2022
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I am impressed with the high level of professionalism at this business. I bought a boat trailer and the experience was a pleasure. The motor vehicles documents were ready in advance so just a couple signatures and I was on my way. Everyone was very helpful, I would recommend to anyone.
Todd Bruno
Todd Bruno
Dec 27, 2021
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Awesome customer service! They go above and beyond for the customer. Tom is a great guy. Stand up person. I first met Tom a few years ago for service on my old boat. Ended up buying a newer boat from these guys last year. Best thing I did. I highly recommend diamond marine for all your boating needs. Thanks!!
Kevin Mavis
Kevin Mavis
Dec 17, 2021
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I've purchased a Venture trailer and also a Mercury outboard from Diamond Marine. Both transactions were flawless. These guys are great to do business with and also have the best prices around. Definitely check them out for all of your boating needs.
Richard J. Sorcinelli
Richard J. Sorcinelli
Aug 19, 2021
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Our 33 year old Grady White 228G Seafarer was in need of a complete overhaul as well as a re-powering in order to be a well found and safe vessel for our son and daughter-in-law to use. My wife and I also purchased an aluminum trailer for “Ariel” from Diamond Marine in addition to the many months it took to complete the extensive overhaul of all of the Grady’s components that could possibly fail while out on the high seas. Her outboard engine was upgraded from its original 34 year old 200 hp Yamaha to a newer 250 hp Evinrude. The Evinrude required some repairs but ultimately wound up running
Albert Marano
Albert Marano
Aug 16, 2021
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I had an excellent experience with Diamond Marine. From Mark , Tom , and Cookie everyone was helpful. When my boat arrived they worked quickly to get me launched. The sea trial was very thorough. It was a very positive experience overall.
Lee Schalk
Lee Schalk
Apr 17, 2021
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Had been looking for a boat for months, which has been an extreme challenge with the pandemic driven high demand and low supply. I got lucky that Diamond Marine had financing fall through on the exact model Stingray I had been looking for.
Alex King quickly helped me review all the options, pricing (a very fair one for this market) and a video call walk through of the boat. He then helped me work with Kathy in accounting to work up the purchase and all the documents required for registration while he also lined up transportation and delivery since I was an out of State buyer.
Prior to delivery
Jon R.
Jon R.
Jan 23, 2020
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Kurt is the coolest player in the game.
Good guy, solid family man, always gotten honest opinions, options and work out of him.

Godspeed.
George B.
George B.
Aug 28, 2019
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Purchased a unique late model powerboat with a new trailer from Diamond Marine. Mark and his staff were excellent. From the first visit to the sea trial! I requested some service from Tommy when closing on a Wednesday, got everything completed and had my boat delivered by the weekend! Never expected that! This company is top notch! Thank you Diamond Marine!
Andrew Price
Andrew Price
Jun 04, 2019
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I had an excellent experience with Diamond Marine and my representative, Kevin. They recommended a trailer that fit my boat perfectly. They had the best price on that trailer. Mary in the business office had all my paperwork ready to go. I recommend Diamond Marine, and I will shop shop with them first in the future.
Moose O.
Moose O.
May 16, 2019
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I searched around from different states and you cannot beat the deal diamond marine has to offer , i drove over 2 hrs and it was worth it, the operation was a success

Moose,
Gail G.
Gail G.
Oct 12, 2018
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We have been searching for a new boat to replace our first boat for several months. We went to the Norwalk boat show and the Diamond Marine Key West display was the first we saw. Captain Dan explained all the ins and outs of the various models. He spent a lot of time with us and really seemed to understand what we were looking for in a boat. The next week we walked into the showroom and our ideal boat was the first one we saw and we decided to make the purchase. The entire process was wonderful and went better than we ever could have expected. Everyone involved was friendly, knowledgeable and
Michael R.
Michael R.
Aug 17, 2018
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We purchased a boat minus the trailer but after a few seasons realized a trailer would allow us to experience different locations . We saw Diamond marine had a used trailer for sale and called to inquire. Karl was very honest and friendly regarding the trailer. I felt very comfortable and purchased it sight unseen. When we came to pick up the trailer we were pleasantly surprised that the trailer was in better condition than Karl stated (looked brand new). The staff at Diamond marine helped me connect to our Jeep and got us on our way in less than 15 minutes. The paperwork was all prepared prior
Jen M.
Jen M.
Jul 04, 2017
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Best experience we could have asked for! Bought the boat from out of state through a boat trader advertisement they had. Entire team was extremely professional, knowledgeable and had the best customer service . Would recommend anyone buy from this marina. Karl the owner is first class.
Kim T.
Kim T.
Dec 07, 2015
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My family recently got a boat that needed some work. Among other things, one of the the Mercury Optimax engines was not running. We started with getting work done at the local marina where the boat was kept. They thought worse case scenario they could get the engine working with a couple grand and a couple of weeks. They didn't know what was wrong with the engine, but basically started by just replacing random parts without any definite plan. After about 4k of sunk costs and 2 months of wasted time without any progress, we finally decided to move the boat to a Mercury dealer to see if they