Whether you prefer the offshore pleasure of reeling in Striper, fishing the inland waters for tournament bass, bringing the family to the New Hampshire lakes in your runabout or evening cruising with your pontoon, Granite State Boat Works is your store! Convenient to Nashua, Manchester, Northern Massachusetts and Coastal New Hampshire, we can set you up with the Boat Parts and Accessories you need or maintain your Boat to peak performance!

Since 1919, Irwin Marine has been NH's leader in new, used and brokerage boats. We feature a full line of Sea Ray Sport Boats & Cruisers, Berkshire, Crest and Premier Pontoons, Yamaha Jet Boats, Stingray Sport Boats, Alumacraft Fishing Boats, Old Town Canoes & Kayaks and Sunfish. We are a full service marina offering boat rentals, gas dock, valet service, service, parts, boats slips, canvas shop and vinyl shop. Certified Marine Technicians. 2017 Voted #16 in Top 100 Dealers nationwide. Open 7 days a week. 3 locations in NH: Laconia, Alton and Hudson. Our Alton location has rental boats available.