2004 Grady-White Marlin 300 Boat in Knoxville, TN 37902 US
Built in 2004
Marlin 300
2 Engines (2x Suzuki)
30 feet
Gas
Fiberglass/Reinforced
2004 Grady-White 300 Marlin
This 2004 Grady-White 300 Marlin represents an exceptional opportunity to own one of Grady-White's most respected offshore models, thoughtfully updated and maintained to a standard that is increasingly difficult to find in boats of this vintage.
Repowered in 2018 with twin Suzuki DF250 four-strokes, currently showing approximately 850 hours, this 300 Marlin benefits from a long list of meaningful upgrades spanning propulsion, electronics, fishing equipment, cosmetics, and mechanical systems.
At the helm, the electronics package has been substantially modernized and includes a 2018 Garmin 12" GPSMAP, and a 2022 Garmin 16" XSV display, Garmin 18" HD radar, 2022 Simrad autopilot, Sirius satellite radio, and a 2024 FLIR thermal camera. New Llebroc helm chairs were installed in 2023, while a new enclosure completed in 2022 keeps the helm well protected and comfortable throughout an extended boating season.
The fishing equipment is equally impressive. In 2025, the boat received 18' carbon-fiber Gemlux outriggers, along with new fresh- and saltwater washdown pumps. New fuel lines and fuel-filter housings were also installed in 2025.
Below the waterline, the bottom was completely stripped and barrier coated in 2023, addressing one of the most important long-term maintenance items on a boat of this age.
Notable Updates & Equipment
- Twin 2018 Suzuki DF250 four-strokes - approximately 850 hours
- Garmin 12" GPSMAP - 2018
- Garmin 16" XSV multifunction display - 2022
- Garmin 18" HD radar - 2018
- Simrad autopilot - 2022
- FLIR thermal imaging - 2024
- Sirius satellite radio
- New enclosure - 2022
- New Llebroc helm chairs - 2023
- Bottom stripped and barrier coated - 2023
- New fuel lines and fuel-filter housings - 2025
- 18' carbon-fiber Gemlux outriggers - 2025
- New fresh- and saltwater washdown pumps - 2025
The 300 Marlin has earned its reputation through a combination of Grady-White's proven SeaV² hull, serious offshore capability, a highly functional fishing cockpit, and a cabin that makes overnight trips and extended days on the water genuinely comfortable.
With its newer Suzuki power, extensively upgraded electronics, premium fishing equipment, and years of thoughtful improvements, this particular 300 Marlin stands well above the typical example of its vintage.
For the buyer searching for a proven offshore platform without the cost of outfitting and updating an older boat from scratch, this is a rare opportunity to acquire a truly turn-key example of a legendary Grady-White fishing machine.
Engine and generator hours are as of the date of the original listing and are a representation of what the listing broker is told by the owner and/or actual reading of the engine hour meters. The broker cannot guarantee the true hours. It is the responsibility of the purchaser and/or his agent to verify engine hours, warranties implied or otherwise and major overhauls as well as all other representations noted on the listing brochure.
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.
Price History
| Date | Event | Price |
|---|---|---|
| 8/23/26 | Initial price | $114,900 |
Grady-White Marlin 300: BoatTEST 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.
Finance your dream boat!
Finance your dream boat!
Be the first to know when similar boats hit the market
Get notified when new boats become available
Boats For Sale in Tennessee, United States Similar to the 2004 Grady-White Marlin 300
Compare with similar boats and find the perfect one for you.
 2004 Grady-White Marlin 300 | ||||||
|---|---|---|---|---|---|---|
| Price | $114,900 | $109,900 | $124,899 | $74,900 | $59,999 | $56,900 |
| Location | Knoxville | Knoxville | Knoxville | Knoxville | Hixson | Harrison |
| Nominal Length | 30' | 38' | 34' | 28' | 21' | 22' |
| Draft | 3' | - | - | - | - | - |
| Engine Make | Suzuki | 454L MPI Horizon MerCruiser | Volvo | Yamaha | - | - |
| Total Engine Power | 250 hp | 380 hp | 320 hp | 250 hp | - | - |
| Days on Market | 2 | 34 | 34 | 25 | 562 | 389 |
| Get in touch |
Meet the Broker
Address
Boat Location
Contact Yachts360 about 2004 Grady-White Marlin 300
1515 SE 17th Street, Suite 125, Fort Lauderdale, FL, 33316
Login with Google