Since 2002, Celtic Quest Fishing has been Long Island’s go-to fishing destination for families, first-time anglers, and seasoned fishermen alike. Founded by Captain Desmond O’Sullivan—a lifelong local fisherman born and raised in Port Jefferson—Celtic Quest is built on a passion for sharing the joy of fishing on the scenic Long Island Sound. What began as a modest operation with a 45-foot boat out of Mt. Sinai Harbor has grown into the best fishing fleet on Long Island, with a reputation anchored in hospitality, safety, and top-notch fishing.
A Fleet Built for Families, Fun & Fishing
With multiple vessels, including the 70-foot Celtic Quest IV and the 80-foot Celtic Grace, the fleet can comfortably accommodate groups of all sizes—from solo adventurers to multi-generational family outings. Each boat is designed with passenger comfort in mind, featuring shaded seating, clean restrooms, modern fish-finding electronics, and a welcoming crew that’s always ready to assist. Whether you’re on a casual open boat trip or booking a private charter for a special occasion, Celtic Quest ensures everyone—from kids to grandparents—has a relaxing and exciting day on the water.All-Inclusive, Worry-Free Fishing
At Celtic Quest, everything you need for a great day of fishing is included at no extra charge. Rods, bait, tackle, instruction, and even fish cleaning are all part of the experience. The crew is hands-on and incredibly patient, offering guidance whether you’ve been fishing for years or it’s your very first cast. More importantly, the atmosphere is designed to be super fun and kid-friendly, making it the perfect outing for families and groups of all ages and experience levels.Celtic Quest IV –
A 70-foot fishing vessel perfect for both open boat and private group outings.Celtic Grace –
An 80-foot powerhouse with the capacity to host up to 129 passengers, making it ideal for corporate events, family reunions, and large community trips.
What You’ll Catch
Celtic Quest focuses on in-season species, offering trips that align with peak fishing windows to maximize success and enjoyment. Depending on the time of year, guests can look forward to fishing for:
Porgies (Scup): Found around rocky areas and wrecks, especially in late spring and summer
Sea Bass: A local favorite found near reefs and structure
Striped Bass: A prized inshore catch, especially during spring and fall migrations
Blackfish (Tautog): Popular in the fall, known for their fight and found on rocky bottom
Fluke (Summer Flounder): Abundant in summer, great for beginners and experts alike
No matter the season, there’s always something biting in the Sound.
A Company Built on Tradition
What truly sets Celtic Quest apart isn’t just its boats or its fishing—it’s the community spirit and dedication behind the brand. Captain Desmond holds a 100-ton Near Coastal Captain’s License and has dedicated his life to fishing these waters and sharing that love with others. Over the years, he and his crew have hosted tens of thousands of guests and have been featured in Newsday, The Fisherman Magazine, and as speakers at top fishing seminars across Long Island. Celtic Quest remains a family-owned and operated business, and that personal touch is felt in every trip.Popular offerings include:
Open Boat Trips for individuals and small groups
Private Charters for celebrations, school outings, or corporate retreats
Seasonal Specials focused on peak blackfish action during the fall months
More Than Just a Fishing Trip
Celtic Quest charters are about more than reeling in fish—they’re about making memories. Whether you’re organizing a family day, a school outing, or a company retreat, the team works hard to ensure your time on board is safe, easy, and unforgettable. Many guests return year after year, creating lasting traditions and reconnecting with the joy of being out on the water.Book Your Fishing Trip Today
As the best fishing fleet on Long Island, Celtic Quest is more than a business—it’s a steward of local tradition, a provider of joyful experiences, and a gateway to the rich marine life that surrounds this incredible stretch of the United States coastline.
Book your trip today at celticquestfishing.com or call (631) 928-3926 to join thousands of satisfied guests who have discovered why Celtic Quest Fishing is the biggest and best on Long Island.
