About Our Pre-Owned Boats


Visit Diamond Marine’s
Gigantic Indoor Showroom

At Diamond Marine, we offer a wide selection of Quality Pre-Owned Vessels. As one of the North East’s largest boat dealers, Diamond Marine welcomes quality trades, and for this very reason, we can offer our customers a very exciting range of Pre-Owned Vessels.

At Diamond, we thoroughly inspect all Pre-Owned boats, putting them through a rigorous 100-point inspection. Needed fluids are changed, and any items requiring repair or adjustment are updated to spec. We also thoroughly clean and detail the entire boat from bow to stern.

Come visit our gigantic 40,000 Sq. Ft. Indoor Showroom and see what we mean when we say Diamond Marine stands behind every boat we sell.

And, best of all, we welcome high-quality Trades…so there’s no better time than NOW to upgrade, or to get into a newer more fuel-efficient vessel.

Call Diamond Marine

at 877-498-5568 to arrange an appointment, or simply stop buy our East Haven, Connecticut location.

View Our Pre-owned Boat Inventory

Click Here to View All Pre-owned Boats in Stock.

Customer Testimonials

Many of the boats shown on this site are also posted to Diamond Marine's eBay super store. We offer our local customer the exact same pricing, but if you wish, take a moment to visit our eBay store. Highlighted below are some of the many comments from our eBay buyers.

  • "Everyone at Diamond was friendly and helpful. Very cooperative. Great boat."
  • "Excellent to work with, will definitely use this company again in the future A++"
  • "Diamond made this purchase easy & pleasurable."