2026 Grady-White Marlin 300
Price on request
Boat in Niantic, CT 06357 US
Built in 2026
Marlin 300
2 Engines (2x Yamaha)
30 feet
Gas
Fiberglass/Reinforced
Arriving Soon: 2026 Grady-White Marlin 300
The Definitive Walkaround | Offshore Legend | All-Weather Versatility
The Grady-White Marlin 300 is the boat that defined the walkaround cabin category and remains the gold standard for versatility in the Northeast. Built on the legendary SeaV2® hull, the Marlin 300 is a true "cross-over" vessel-providing the fishability of a large center console with the dry, secure cabin of an offshore cruiser. Whether you are running to the Race in a heavy chop or spending a long weekend at Block Island, the Marlin 300 delivers a level of safety and comfort that has made it a favorite on the Sound for over 30 years.
The Foundation: Stability & Proven Performance
SeaV2® Hull Excellence: Grady's signature variable-degree deadrise hull ensures a smooth, dry entry and incredible tracking, allowing you to stay on the water when others are heading for the dock.
Massive 10' 7" Beam: The Marlin's wide beam offers a significantly larger cockpit and cabin than most 30-foot boats, providing unmatched stability and room for the whole family.
Upgraded Twin Yamaha F350 Power: This unit is rigged with the powerful Twin Yamaha F350FM4 outboards, offering high-performance torque and efficiency for serious offshore runs.
Premium Features & Custom Specs
- Sage Gray Underside Top: A sleek, custom look featuring a Sage Gray gel color on the underside of the hardtop.
Enhanced Maneuverability: Equipped with a Bow Thruster for effortless docking and precision handling in tight marinas.
Offshore Ready: Includes 18' Crank Adjust Outriggers, underwater lights, and a comprehensive Coast Guard Safety Package.
Full All-Weather Prep: This boat will arrive with professional Bottom Paint already applied, ready for the salt.
The Ultimate Cabin & Comfort
Climate Controlled Luxury: Enjoy the comfort of full Air Conditioning and a beautifully appointed cabin featuring a TV with HDMI for those rainy days at the marina.
Luxury Accommodations: Includes a full galley with a microwave, fridge, and stainless steel sink, plus a teak-and-holly sole.
Sleeps Four Comfortably: Features a large forward V-berth that converts into a dining area and a spacious aft double berth, making it a true overnight-capable vessel.
Full-Featured Head: Includes an enclosed head area with a shower and a porcelain head with a holding tank.
Why Choose Boats Inc.?
When you purchase a boat with us, you are partnering with a legacy of excellence. Boats Inc. has been serving the boating community for over 60 years. We are honored to have been repeatedly voted #1 for Best in Customer Satisfaction, a testament to our commitment to our customers long after the sale is complete.
The Grady-White Marlin 300 is the definitive choice for the boater who values security, comfort, and performance.
Call or visit Boats Inc. today to get the latest arrival details and secure this 2026 Grady-White Marlin 300 before it hits the docks!
The Company offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice.
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2026 Grady-White Marlin 300 Video Tours
Boattest.com Review
Overview
The Grady White Marlin 300 is a classic offshore walkaround boat that blends the features of an express fishing boat with the fishing amenities typically found on center consoles. Unlike many center consoles, it offers overnight accommodations, making it a versatile and family-friendly vessel. Measuring 30 feet 6 inches in length overall with a beam of 10 feet 7 inches, the Marlin 300 provides a spacious and stable platform for offshore fishing and extended trips.
Exterior Design and Cockpit
The Marlin 300 features a hull draft of 23 inches and a closed foredeck with a protected bridge and high windshield, which effectively shed green water in rough seas, ensuring a dry and safe ride offshore. The cockpit is designed with fishing in mind, offering 8 feet 10 inches of space from bolster to bolster and 6 feet 6 inches from the transom to the bait prep station, allowing ample room for multiple anglers to move and fish comfortably. The cockpit is 28 inches deep, with large bolsters and sturdy tow rails enhancing safety. Storage is well thought out, including rod storage under the gunnels and multiple rod holders on the cap rails and hardtop. The transom includes a door leading to a stern platform with a four-step ladder and grab rail for easy water access. Additional features include a freshwater shower wand, shore power connections, engine freshwater flush attachments, washdown hoses, battery switches, and circuit breakers housed in a dedicated compartment. The transom deck incorporates a cutting board over a storage compartment with pull-out tubs and battery storage below. A transom bench seat provides comfortable seating, and hatches grant access to the optional Fisher Panda 5 kW generator, pumps, seacock levers, water tanks, and a large insulated fish box.
Helm and Bridge Features
The helm deck is equipped with optional command chairs that are adjustable both vertically and horizontally, featuring ventilated backrests, swivel seats, flip-up bolsters and armrests, and fold-down footrests. Storage is integrated into the helm seats with locking drawers. The dash offers ample space for electronics and includes a Yamaha engine monitoring screen, compass, accessory switches, and a stainless steel tilt steering wheel. Controls for the twin Yamaha 300 horsepower V6 4.2-liter four-stroke outboards, trim tabs, stereo remote, and optional bow thruster are ergonomically positioned for ease of use. The fiberglass hardtop with a painted aluminum frame includes lockable storage boxes, storage nets, spreader lights, and opening side vents. Strata glass front and side curtains complete the enclosure, making the boat suitable for three-season use. Walk-around side decks with nine-inch bulwarks and tall rails provide safe access to the foredeck, which features a recessed design, a windlass with foot controls, a large hatch for the rode locker, and cushioned seating on the trunk cabin.
Interior Living Spaces
Below deck, the Marlin 300 offers comfortable accommodations suitable for overnight stays. The cabin includes a small galley to port equipped with a sink providing hot and cold running water, an electric stovetop set into a Corian countertop, a microwave, and a refrigerator. The bow features a dinette with a cherry wood table that converts into a V-berth. To starboard, there is an enclosed wet head with standing headroom, and a crawl-in mid-cabin contains a double berth, an opening port light, and rod holders. The interior is finished with a teak and holly sole and includes a six-gallon water heater and a 32-gallon fresh water tank, all standard equipment enhancing comfort and convenience.
Power and Performance
The test boat weighed an estimated 10,615 pounds with three people aboard, 39% fuel, and test power installed. Powered by twin 300 horsepower Yamaha V6 4.2-liter four-stroke outboards, the Marlin 300 achieved a top speed of 50 miles per hour at 5,900 RPM. The best cruise speed was 27.6 miles per hour at 3,500 RPM, delivering fuel efficiency of 1.5 miles per gallon and a range of approximately 390 statute miles with a 10% fuel reserve from its 282-gallon capacity. Acceleration was brisk, reaching planing speed in 3.3 seconds, 20 miles per hour in 3.9 seconds, and 30 miles per hour in 6.9 seconds. The hull’s 19.5-degree dead rise at the transom provided smooth handling through one-foot chop and 10-mile-per-hour gusting winds. Maneuverability was responsive and predictable, aided by the optional bow thruster and twin outboards, which facilitated easy docking and slip entry.
Conclusion
The Grady White Marlin 300 has been a mainstay in the brand’s lineup since 1989 for good reason. It offers a dry, secure, and comfortable platform suitable for families and anglers alike, combining offshore fishing capabilities with overnight accommodations. Its spacious cockpit, well-thought-out fishing amenities, protective design, and reliable performance make it a versatile vessel that meets the needs of a wide range of boaters. Overall, the Marlin 300 stands out as a well-rounded offshore walkaround that balances fishing functionality with cruising comfort.
Overview from around the web 2026 Grady-White Marlin 300
Customers are praising the 2026 Grady-White Marlin 300 for its exceptional build quality and reliable performance on the water
Many highlight its spacious and well-thought-out deck layout, which offers ample room for fishing and leisure activities. Users appreciate the boat's smooth ride and stability, even in choppy conditions, making it a favorite for both offshore fishing trips and family outings. The advanced electronics and comfortable seating arrangements also receive positive remarks, contributing to an overall enjoyable boating experience. Owners frequently mention the durability and attention to detail that Grady-White is known for, reinforcing the Marlin 300 as a top choice in the sportfishing and offshore boat category.
The Biggest Pros and Cons
The 2026 Grady-White Marlin 300 offers a blend of performance, comfort, and versatility, making it a popular choice for anglers and family boaters alike. Here are some key pros and cons to consider:
Pros
Spacious Layout: The Marlin 300 features a roomy deck with ample seating and storage, providing comfort for long days on the water.
Fishing-Friendly Design: Equipped with multiple rod holders, live wells, and fish boxes, it’s well-suited for serious anglers.
Smooth Ride: The deep-V hull design delivers excellent handling and a smooth ride even in choppy conditions.
Quality Build: Known for Grady-White’s high standards, the boat is constructed with durable materials and attention to detail.
Advanced Electronics: Comes with integrated navigation and fish-finding electronics to enhance the boating experience.
Versatility: Suitable for both offshore fishing and family cruising, making it a multi-purpose vessel.
Cons
Price Point: As a premium boat, the Marlin 300 may have a higher initial cost compared to similar-sized competitors.
Fuel Consumption: With its powerful engines and larger size, fuel efficiency may be lower than smaller boats, leading to higher operating costs.
Limited Cabin Space: While offering some shelter, the cabin area is modest and may not be ideal for overnight stays.
Weight: The boat’s solid construction adds weight, which can affect trailering and launching for some users.
Made For
The 2026 Grady-White Marlin 300 is designed for serious anglers and boating enthusiasts who demand top-tier performance, versatility, and reliability on the water. Ideal for offshore fishing adventures, this boat suits those who want a spacious, well-equipped vessel capable of handling rough seas while providing comfort and ample storage. Whether you're targeting big game fish or enjoying a day cruising with family and friends, the Marlin 300 offers the perfect balance of rugged durability and refined features to meet the needs of experienced boaters and fishing aficionados alike.
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| Niantic | Niantic | Niantic | Niantic | Niantic | Niantic |
| 30' | 21' | 23' | 40' | 36' | 37' |
| Yamaha | Yamaha | YAMAHA | Yamaha | Yamaha | Yamaha |
| 350 hp | 250 hp | 350 hp | 450 hp | 450 hp | 450 hp |
| 257 | 1109 | 257 | 518 | 518 | 257 |
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Contact Boats Inc about 2026 Grady-White Marlin 300
133 Main Street, Niantic, CT, 06357
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