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Praise From Our Customers

Free Martin

Eric and Amanda live and breathe boats. They want to talk to you if you are looking at buying a boat, having a boat winterized, wrapped and/or stored. Eric is retired from the USCG (thank you for your service Eric) and knows boats and motors inside and out. Amanda is a savvy business woman that believes in running the business the right way. This company is a locally owned family business that is here to help boat owners. You will not find better people to handle all your boating needs. They will treat you like family when you step inside their Dedham shop. I'd talk to them about consignment too. Route 1a gets a lot of traffic and their lot is a great place to sell your boat.

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Brad Rand

Eric went out of his way to help us in a pinch. He went above and beyond. I would recommend M3 Marine to anyone for their service or sales.

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James Grant

Excellent customer service! Highly recommend for your storage and service needs. Picked up trailer and was not prepared like I should have been and they were more than helpful to make sure I was taken care of.

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Michael Brooks

Eric and Amanda are great. Very helpful and knowledgeable, nice people with great customer service.

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Randy Porter

I have used about a dozen different Marina's in the area. Started using them last year. Unbelievable job! From motor/boat knowledge, customer service, to boat wrapping, way above standard. They will go out of their way to help you.

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M French

Eric and Amanda saved the day! We only had 1 day to fish this 4th of July, but I couldn’t get the boat motor to turn over. I called M3 to drop off the boat for service, knowing it would be a week or so before they could fit me in - figured I’d have it ready by our next trip to the cabin in August. When I arrived with the boat Amanda asked Eric to take a quick look to see if anything stood out (maybe a flipped kill switch or something). Eric noticed an issue immediately, stopped what he was doing, and had it fixed in 15 minutes. I know they were swamped with work, but they were kind enough to go the extra mile for us. THANK YOU!!

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Jill Mayhew

4th generation on the lake (correct me if I’m wrong). Doing business with this company since its inception, OUTSTANDING! Put Camp Capella’s boats in . Wonderful family, so happy to have them in our community.

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Timothy Davis

I am so happy that I found M3. Before I was left with the task of having to trailer, launch and service my own boat. Not to mention the hassle of winterizing and storing it all myself. Now they do all of those things for me leaving me with more time to spend with family and friends out on the water ! Thank you M3 for making boat ownership so much more enjoyable.

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Kim Long

I've had the M3 Team work on our boats and the service is great with wonderful customer communications. Knowledgeable service and always willing to help out.

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Crest Pontoon Sales

Explore our lineup of Crest pontoons, known for luxury, performance, and craftsmanship. Whether you're cruising with family or entertaining on the water, Crest delivers comfort and reliability. Visit us in Dedham, Maine to find the perfect model for your lifestyle.

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Mercury Engine Sales

If you’re looking for high-quality, reliable outboard engines, you’ve come to the right place. As Maine’s leading Mercury Outboard Engine Sales & Service Dealer, we pride ourselves on offering top-tier products and expert service to boaters across the state. Our family-owned business in Dedham, Maine, has built a reputation for trust, reliability, and unparalleled customer service.

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Pre-Owned Sales

Looking for a reliable boat without the new price tag? Our selection of pre-owned boats is carefully inspected and ready for the water. From fishing vessels to pontoons, we offer great value and trusted quality for every type of boater.

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Service & Repair

M3 Marine near Green Lake in Dedham, ME offers boat repair and winterization services for many different types of vessels. We’ll pull your boat out of Phillips Lake and deliver it to our secure storage space where we will prepare it for winter storage. Our professionals can handle any minor engine repairs and remove the battery to prevent corrosion. We’ll even shrink-wrap your boat to keep out moisture.

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Boat Storage

Protect your investment with our secure boat storage solutions. We offer seasonal indoor and outdoor storage in Dedham, Maine, with professional care and winterization options to keep your boat in top condition year-round.

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Boat Detailing

Keep your boat looking its best with our professional detailing services. From thorough cleaning to polishing and gelcoat restoration, we help maintain your boat’s appearance and value. Schedule your detailing service today!

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Why Choose M3 Marine

Over Twenty Years in Business

Decades of experience you can count on—delivering quality products and trusted service since day one.

Servicing Six Lakes in Maine

Proudly supporting boaters across six of Maine’s most popular lakes with local expertise and quick response.

Veteran Owned

Owned and operated by a U.S. veteran—bringing integrity, discipline, and dedication to every customer interaction.

Family Operated

A hands-on, family-run business that treats every customer like one of our own.

Trusted Small Business

Built on reputation and relationships, we’re a small business known for honesty, reliability, and customer care.

Full Service for Boat Owners

From sales to service and storage—we’re your one-stop shop for all things boating.

Learn More About Us