Marlin 300

30' WALKAROUND CABIN

 

The first model built on the exclusive SeaV²® hull, the Marlin 300 offers amazing performance and true offshore saltwater fishing boat capability. Since that first design over three decades ago, the Marlin 300 has been refined through customer input and Grady’s acclaimed exceptional attention to detail. From the high windshield with ventilated tempered glass to the plush seating and luxurious cabin, this is a much-loved, legendary 30-foot walkaround fishing boat with abundant family-friendly details.

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Marlin 300 Main Specifications

Beam Amidships
10'7" (3.23 m)

Center Line Length w/o Engines
30'6" (9.30 m)

Bridge Clearance
9'9" (2.97 m)

Weight w/o Engines
8221 lb. (3729 kg)

Cockpit Depth
29" (0.74 m)

Hull Draft
23" (0.58 m)

Transom Deadrise

Maximum HP
700 (522 kW)

Fuel Capacity - Standard
282 gal. (1067 l)


Marlin 300 Features & Options

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Select camera icons where available to view feature photos

patent icon

Denotes feature as trademarked, exclusive, patented, or patent pending

STANDARD FEATURES

Safety

2 automatic bilge pumps (total 2600 GPH) (9842 LPH)

Basic flotation

Grady-White Marlin 300, 30-foot walkaround cabin with stainless steel bow rail

Bow rail - 316 grade stainless steel

Gulfstream 232 Grady White 23 foot Walkaround Cabin Boat Captain Grady App

Captain Grady® - digital boat systems & operations guide for iPad & iPhone

Grady-White Marlin 300, 30-foot walkaround cabin boat rod storage racks.

Cockpit toe rails

Composite stringer system & transom - water impervious

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Non Skid

Nonskid fiberglass liner

Grady-White Marlin 300, 30-foot walkaround cabin with nonskid recessed walkaround

Nonskid recessed walkaround

Grady-White Marlin 300, 30-foot walkaround cabin boat cockpit overall.

Self-bailing cockpit w/cockpit drains (4)

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Through Hull Fitting

Stainless steel through-hull fittings

Cabin

Grady-White Marlin 300, 30-foot walkaround cabin with 5v outlet in cabin

Accessory outlet - 5V duplex USB port

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Aft Berth

Berth - aft double berth

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Forward Berth

Berth - forward vee berth

Grady-White Marlin 300 30 foot Walkaround Cabin Boat CO Monitor

Carbon monoxide detector

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Companion Hatch

Door - lockable w/screen & companionway hatch

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Forward Hatch

Forward hatch - low profile acrylic hatch w/screen & shade

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Full Galley

Galley - port galley w/sink, light & Corian® cutting board

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Head

Head - enclosed head area w/sink, shower, lamp & VacuFlush® marine head w/freshwater supply, 10-gallon (38 l) holding tank, overboard discharge & deck pump out

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Dome Light

Lighting - dome (2)

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Reading LIght

Lighting - reading (3)

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Microwave

Microwave oven

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Head Mirror

Mirror

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Refrigerator

Refrigerator - stainless steel

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Aft Berth

Rod storage - aft berth horizontal (4)

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Cabin Rod Storage Racks

Rod storage - forward horizontal (6)

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Microwave

Stereo system w/waterproof touch screen display, AM/FM tuner, Wi-Fi & Bluetooth® connectivity & remote unit; speakers w/LED lights - helm (2), cabin (2), cockpit (2)

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Galley

Storage - galley cabinets & counter

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Under Berth Storage

Storage - under berth compartments

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Aft Berth

Storage nets

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Full Galley

Stove - electric glass top

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Cabin Table

Table - cherry

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Cabin Interior

Teak & holly sole

Water heater - 6-gallon (22.7 l), 120V

Water tank - 32-gallon (121.1 l) freshwater

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Window

Windows - tinted frameless acrylic w/shade

Cockpit & Deck

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Grady-White Marlin 300 30 foot Walkaround Cabin Boat Hand Laid Hull

100% hand laid SeaV² hull & deck

Grady-White Marlin 300, 30-foot walkaround cabin boat 12V outlet.

Accessory outlet - 12V

Grady-White Marlin 300, 30-foot walkaround cabin with 5v outlet at helm

Accessory outlet - 5V duplex USB port

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Anchor Windlass and Rode Storage

Anchor windlass w/remote switches at helm & windlass

Grady-White Marlin 300, 30-foot walkaround cabin boat batteries and battery switches.

Batteries (4) w/battery select switches (one per engine) & charger system (1)

Grady-White Marlin 300, 30-foot walkaround cabin bow pulpit with roller

Bow pulpit w/roller

Grady-White Marlin 300, 30-foot walkaround cabin boat cleat.

Cleats

Grady-White Marlin 300, 30-foot walkaround cabin boat cockpit overall.

Cockpit bolsters

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Cockpit Shower

Cockpit freshwater shower (recessed)

Grady-White Marlin 300, 30-foot walkaround cabin boat blue cockpit lights.

Cockpit lights - blue LED

Grady-White Marlin 300, 30-foot walkaround cabin boat cockpit side door.

Cockpit side door - port w/boarding ladder

Grady-White Marlin 300, 30-foot walkaround cabin with stainless steel companion grab rail

Companion grab rail

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Stainless Steel Hardware

Deck hardware - 316 grade stainless steel through-bolted

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Dockside Power

Dockside power w/galvanic isolator

Grady-White Marlin 300, 30-foot walkaround cabin with stainless steel drink holders

Drink holders - stainless steel (9)

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Engine Flush

Engine flush system w/hose attachment aft (one per engine)

Factory engine pre-rigging

Fighting chair reinforcement

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Aft Fish Box

Fish box - 290-qt. (274.4 l) aft insulated fish box w/light & ob drain

Grady-White Marlin 300, 30-foot walkaround cabin boat helm overall.

Flush mount electronics area

Grady-White Marlin 300, 30-foot walkaround cabin with fold down footrest at helm

Footrests - helm & companion (fold down)

Grady-White Marlin 300, 30-foot walkaround cabin freshwater level indicator

Freshwater level indicator

Fuel capacity - 282 gallons (141-gallon tank, 141-gallon tank) (1067 l)

Grady-White Marlin 300, 30-foot walkaround cabin with hardtop color match to hull color

Hardtop w/painted aluminum frame, radio box, storage nets, spreader lights, side mounted rod holders (4), outrigger plates & drop, front & side curtains (black or ivory)

Grady-White Marlin 300, 30-foot walkaround cabin with trim tabs

Hydraulic trim tabs w/indicator & retractor

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Outboard Mount

Integrated outboard mounting system w/swim platform & ladder

International lighting

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Livewell

Livewell - 32-gallon (121.1 l) port insulated raw water livewell w/light, full column distribution inlet & ob drain (1100 GPH pump) (4164 LPH)

Grady-White Marlin 300, 30-foot walkaround cabin starboard side rigging station with sink and tackle storage

Rigging station - freshwater sink, insulated bait box w/ob drain & lockable drawers

Grady-White Marlin 300, 30-foot walkaround cabin boat rod holder.

Rod holders - cockpit (4)

Grady-White Marlin 300, 30-foot walkaround cabin boat rod storage racks.

Rod storage racks - horizontal (3)

Grady-White Marlin 300, 30-foot walkaround cabin with stainless steel rubrail

Rubrail - high density PVC w/stainless steel insert

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Deluxe Helm and Companion Seating

Seating - Deluxe II vertically & horizontally adjustable helm & companion chairs

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Grady-White Marlin 300, 30-foot walkaround cabin with aft bench seat

Seating - foldaway aft bench seat w/cushion

Grady-White Marlin 300 30-foot Walk around Cabin Boat Fore deck Cushions

Seating - foredeck cushions

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Port Side Cushioned Seating

Seating - port livewell cushion

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Starboard Cushioned Seating

Seating - starboard rigging station cushion

Grady-White Marlin 300, 30-foot walkaround cabin with Yamaha Helm Master DES steering

Steering - Helm Master EX® w/Integrated Digital Electric Steering (does not include joystick)

Grady-White Marlin 300, 30-foot walkaround cabin boat helm overall.

Steering wheel - 316 grade stainless steel w/knob

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Stern Eye

Stern eyes - 316 grade stainless steel

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Lift Out Box

Storage - aft deck lift out box

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Anchor Windlass and Rode Storage

Storage - forward anchor locker w/rode storage

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Under Seat Storage

Storage - lockable storage under helm & companion seats

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Under Step Storage

Storage - under step compartment

Transducer mounting flats

Grady-White Marlin 300, 30-foot walkaround cabin with transom door

Transom door - fiberglass

Washdown - freshwater

Washdown - pressurized raw water w/hose

Water tank - 32-gallon (121.1 l)

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Windshield

Windshield - tempered glass w/side vents

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Windshield

Windshield wipers w/starboard washer

OPTIONAL FEATURES

Options

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Air Conditioning

Air conditioning - 8000 BTU in cabin

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Bow Thruster

Bow thruster

CE certification package (European Conformity)

Grady-White Marlin 300, 30-foot walkaround cabin cockpit freshwater hot and cold shower

Cockpit freshwater shower w/hot & cold mixer

Yamaha factory painted engines in white, shown here as twins on a Freedom 307 dual console

Engine paint - Yamaha factory-painted engine(s), pearlescent white

Grady-White Marlin 300, 30-foot walkaround cabin boat generator.

Generator - 5kW diesel, 12-gallon (45.4 l) fuel capacity

Grady-White Marlin 300, 30-foot walkaround cabin with hardtop color match to hull color

Hardtop color - underside of fiberglass hardtop (requires matching gelcoat hull color option)

Grady-White hull color examples

Hull color - Celestial Blue, Coastal Fog, Ocean Mist, or Sea Glass gelcoat

International AC electrical conversion - 220V (50Hz)

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Underwater Lights

Lighting - underwater blue LED (3)

Grady-White Marlin 300, 30-foot walkaround cabin boat outriggers.

Outrigger kit - 18-ft. (5.5 m) crank hardtop mounted stainless steel outriggers w/carbon fiber poles

Grady-White Marlin 300, 30-foot walkaround cabin with hard top rod holders

Painted hardtop top mounted rod holders (6)

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Rod Storage

Rod storage - folding cabin rack (4)

Grady-White Marlin 300, 30-foot walkaround cabin companion bench seat

Seating - companion bench seat (replaces Deluxe II companion chair)

Grady-White Marlin 300, 30-foot walkaround cabin command elite helm chair with flip up bolsters and armrests

Seating - Command Elite helm chair (1) horizontally & vertically adjustable w/deluxe cushioning & flip-up bolster

Grady-White Marlin 300, 30-foot walkaround cabin command elite helm chair with flip up bolsters and armrests

Seating - Command Elite helm & companion chairs (2) horizontally & vertically adjustable w/deluxe cushioning & flip-up bolster

Grady White Boats Yamaha Helm Master

Steering - Helm Master EX® w/Full Maneuverability

TV - 19" LED flat screen w/HDMI inlet


Marlin 300 Performance Data

Two gray Yamaha 300 hp engines
300 Yamaha Four-Stroke
Twin

Top Speed: 49.5 MPH @ 5800 RPM

Optimum Cruise: 29.7 MPH @ 3800 RPM

GPH at Optimum Cruise: 21.5

MPG at Optimum Cruise: 1.38

Gray engine color

GRAY

Standard

White engine color

WHITE

Optional

Two gray Yamaha 300 hp engines
300 Yamaha Four-Stroke
Twin

Engine Size

4.2L

Test Date

9/22/2010

Prop Size

15 1/2 X 17 SWS II SDS

Weight as Tested

11697 lb. (including persons, fuel, water, gear, engines & accessories)

Hardtop

Yes

Bow Pulpit

Yes

Bottom Paint

No

Optimum Cruise

29.7 MPH @ 3800 RPM

RPM MPH GPH MPG
1000 6.0 2.6 2.31
1500 7.9 4.1 1.94
2000 8.8 6.7 1.31
2500 9.7 10.0 0.97
3000 14.6 12.8 1.14
3500 26.4 18.0 1.47
3800 29.7 21.5 1.38
4000 31.5 23.9 1.32
4500 36.6 30.7 1.19
5000 42.0 40.4 1.04
5500 46.4 50.7 0.92
5800 49.5 52.3 0.95
Back To Engines
PERFORMANCE DISCLAIMERS
The following variables can affect performance: wind, current, sea conditions, speed, engine performance, transducer, trolling time, engine trim, bottom paint, trim tabs, curtains, tops, gear placement and prop size/condition/type. This report should be used only as a general reference guide. Prop size, pitch and prop features listed in this performance report reflect the available props factory installed on new boats from Grady-White at this time. Props cited in the report may be an updated version(s) of the prop(s) used at the time of the test.
Two gray Yamaha 300 hp engines
300 Yamaha Four-Stroke
Twin

Engine Size

4.2L

Test Date

9/22/2010

Prop Size

15 1/2 X 17 SWS II SDS

Weight as Tested

11697 lb. (including persons, fuel, water, gear, engines & accessories)

Hardtop

Yes

Bow Pulpit

Yes

Bottom Paint

No

Optimum Cruise

29.7 MPH @ 3800 RPM

RPM MPH GPH MPG
1000 6.0 2.6 2.31
1500 7.9 4.1 1.94
2000 8.8 6.7 1.31
2500 9.7 10.0 0.97
3000 14.6 12.8 1.14
3500 26.4 18.0 1.47
3800 29.7 21.5 1.38
4000 31.5 23.9 1.32
4500 36.6 30.7 1.19
5000 42.0 40.4 1.04
5500 46.4 50.7 0.92
5800 49.5 52.3 0.95
Back To Engines
PERFORMANCE DISCLAIMERS
The following variables can affect performance: wind, current, sea conditions, speed, engine performance, transducer, trolling time, engine trim, bottom paint, trim tabs, curtains, tops, gear placement and prop size/condition/type. This report should be used only as a general reference guide. Prop size, pitch and prop features listed in this performance report reflect the available props factory installed on new boats from Grady-White at this time. Props cited in the report may be an updated version(s) of the prop(s) used at the time of the test.

Marlin 300 Overhead

Select the hotspots below to learn more about the Marlin 300 features.

Grady-White Marlin 300 30 foot Walkaround Cabin Boat Overhead

Marlin 300 Virtual Tour


Videos

Customer Reviews


Industry Reviews

 

 October 2020, New Zealand Fishing News - "Grady-White Marlin 300 One Serious Sportfisher"

 

 Nov-Dec 2019, Pacific Power Boat - "Grady-White Marlin 300 WA"

 

 2017, BoatTEST.com - "Grady-White Marlin 300 (2017-)"

 

 January 2015, Soundings - "Grady-White 280 Marlin"

 

 June 2007, Motorboating - "Grady-White 300"