Monahan's Marine
Monahan's Marine has been the South Shore's Boating Headquarters since 1961. Located in Weymouth, just 20 minutes south of Boston, we offer new and used boat sales, boat brokerage, and trade-ins. As an Authorized Yamaha Dealer and Yamaha Re-Power Center, our professional marine service team handles repairs, repowers, maintenance, winterization, shrink-wrap, and boat storage. Our store carries marine parts, electronics, and boating supplies, plus a full fishing tackle shop and fly shop. Family-owned roots and an experienced team mean honest advice and personal service for every customer. We proudly serve boaters across the South Shore and New England, on the water and off.
Customer's reviews
What a great shop all around! Nancy, Wally, Ron, Garett & many more! All so kind and treat you so well, from sales, service and or walking the isles loaded with great stuff! Awesome pricing, great turnaround on service. Great communication what more can you ask for! They all know their stuff like the back of their hand! Couldn’t be more happy, nothing bad to say at all! Honestly! They answer when you call and they take care of you when you show up!
During these trying times they all maintained the Covid compliment PPE too! They couldn’t be any more respectful all around!
Thanks again all! See you all soon!
~ Eddie K
Bought a roll-up inflatable and yamaha outboard here, called around, got some snobby responses from marina's that said they don't do that kind of thing. Tried Monahan's, explained this was my first venture into anything beyond a kayak, Eddy and Mike were super helpful on the phone. On pickup day, Mike was super friendly, answered all my kids' questions and even asked them a few, and helped me carry the boat to the car. Phil (I think) in the garage walked me through every little step of getting acquainted with the outboard, from hooking it up, starting it up, running it a few minutes in their indoor tank, all the way to clearing the gas line out and putting it on its side. And all the paperwork and warranty registrations were handled promptly without me even asking. Highly recommend this place.
~ M P
I saw a Highfield 5.6 Sport at the Boston Boat show. Made contact w Matt and got the process of discussing, spec-ing, financing and ordering the Sport. Process was smooth, great communication along the whole way. Sophia arrived yesterday to launch it, orient us and take us on the Merrimack for training. She’s amazingly informed AND patient! Whole process was a pleasure, I can’t thank the Team for making it smooth. Thank you, again for delivering such a gorgeous piece of equipment, just as promised.
Now just need to name her!
Thanks again:)
Anthony🍕
~ Anthony A
Blog
Garmin Marine Electronics & Boat Navigation Systems
Technology can make every day on the water safer, smarter, and more enjoyable. At Monahan's Mari…
Posted on: July 27, 2026
Trusted Boat Dealer & Marine Experts on the South Shore
For generations, Monahan's Marine has been helping families, anglers, and boating enthusiast…
Posted on: July 16, 2026
Expert Boat Sales & Personalized Customer Service
Buying a boat is about more than choosing a model it's about finding the right fit for your lifest…
Posted on: July 16, 2026
Contact information
Phone
+1 781-335-2746
Address
396 Washington Street
Weymouth
02188
Sunday
Closed
Monday
8:30 AM - 5:00 PM
Tuesday
8:30 AM - 5:00 PM
Wednesday
8:30 AM - 5:00 PM
Thursday
8:30 AM - 5:00 PM
Friday
8:30 AM - 5:00 PM
Saturday
8:30 AM - 2:00 PM
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