Call Now
Website
Call
Business Details
34 Years
experience
Your Trusted Boat Dealership on Long Island
Great Bay Marine has been serving Long Island's boating community since 1992, establishing itself as a premier marine dealership with the highest customer satisfaction ratings in sales, service, and rentals. As one of the largest Robalo dealers in the country and a NMMA Certified Dealership, we offer an extensive inventory of new and pre-owned boats from renowned brands like Monterey, Crownline, Robalo, Steiger Craft, and Blackfin. Our service department, staffed by certified mechanics, provides comprehensive maintenance, winterization, and commissioning services to ensure trouble-free boating experiences.

With five strategically located facilities across Long Island, our experienced team delivers personalized, no-pressure service tailored to both novice and seasoned boaters. Our commitment to excellence has earned us multiple awards, including the Robalo Customer Service Award and recognition as the 4th Largest Robalo Dealer globally. We pride ourselves on maintaining transparent communication, ethical business practices, and deep local expertise to meet the diverse needs of New York's boating community.
Services
Boat Sales Service Maintenance Boat Rentals Winterization Commissioning
Details
  • Year established: 1992
Highlights and features
  • Established in 1992 with proven industry expertise
  • Largest Robalo dealer in the Northeast region
  • Certified service technicians with specialized training
  • Comprehensive maintenance programs for all boat types
  • Local boating experts serving Long Island communities
Associations and certifications
  • NMMA Certified Dealership
What people say
Highest customer satisfaction Award-winning service Certified mechanics Extensive inventory No-pressure experience
Services
Boat Sales
Offering new and pre-owned boats from premium brands including Robalo, Monterey, Crownline, and Steiger Craft. Our inventory features fishing boats, center consoles, and luxury yachts to suit recreational and commercial needs. Sales team provides expert guidance through selection, financing, and customization options.
Service Maintenance
Comprehensive maintenance and repair services performed by certified technicians. Includes engine diagnostics, electrical system evaluations, and seasonal commissioning. Specialized programs ensure optimal performance for saltwater and freshwater vessels while extending equipment longevity through preventive care.
Boat Rentals
Short-term boat rentals available for recreational use across Long Island waterways. Fleet includes fishing boats, pontoon boats, and sport cruisers. Rental packages include safety equipment and basic operation instructions for novice boaters while providing premium vessels for experienced captains.
Winterization
Professional winterization services protect vessels during off-season storage. Process includes engine fogging, antifreeze flushing, battery maintenance, and hull protection. Optional storage solutions available with secure indoor and outdoor facilities to maintain boat condition throughout colder months.
Commissioning
Complete commissioning services for new boat purchases. Includes battery installation, system diagnostics, steering calibration, and safety equipment checks. Technicians ensure all electronics, navigation systems, and mechanical components function properly before first use for immediate trouble-free operation.
People
Tim Kelly
Owner
With decades of experience in the marine industry, Tim Kelly leads Great Bay Marine as owner, known for his honest approach and deep understanding of Long Island boating needs. He ensures every customer receives personalized service and expert guidance through the boat purchasing process.
Craig Kelly
Service Manager
Craig Kelly oversees the service department with certified mechanics, specializing in marine engine diagnostics and preventive maintenance programs. His technical expertise and commitment to quality repairs have maintained Great Bay Marine's reputation for reliable service since the company's founding.
Frank Rapczyk
Service Technician
As a certified marine mechanic, Frank Rapczyk provides expert service and commissioning for new boat purchases. His attention to detail during system checks and preventive maintenance ensures customers' vessels remain in optimal condition for both recreational and commercial use.
Questions
What boat brands do you carry?
We offer new boats from Robalo, Monterey, Crownline, Steiger Craft, Blackfin, and Viaggio. Our pre-owned inventory includes various premium brands with regular additions to our selection.
Do you provide boat service and maintenance?
Yes, our certified technicians offer complete service including engine repairs, electrical diagnostics, winterization, commissioning, and preventive maintenance programs for all boat types.
Are financing options available?
We partner with marine financing institutions to offer competitive boat loan programs for qualified buyers. Speak with our sales team for personalized financing assistance.
Do you have boat rental options?
Yes, we offer seasonal and short-term boat rentals across multiple locations, featuring fishing boats, center consoles, and family-friendly vessels for Long Island waterways.
What service areas do you cover?
We primarily serve Long Island, New York, with five convenient locations in Islip Terrace, Flanders, Babylon, Bellport, and Lindenhurst.
Can you help with boat commissioning?
Our commissioning service includes battery installation, system diagnostics, steering calibration, and safety checks to ensure your new boat operates perfectly from day one.
Videos