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Grady white marlin 300 running in the channel islands

30' WALKAROUND CABIN

Marlin 300

Legendary performance and comfort in a proven offshore classic.

The first model built on Grady-White’s SeaV²® hull, the Marlin 300 is a true offshore legend. Continuously refined for over three decades, it pairs proven performance with luxurious comfort and exceptional detail. From serious offshore fishing to family cruising, the Marlin 300 defines the benchmark for 30-foot walkaround boats.

85+ standard features

3 16677 marlin 300 grady white 30 walkaround cabin gbb 7844 ext

30'6"

(9.30 m)

Center Line Length (w/o Engines)

10'7"

(3.23 m)

Beam Amidships

700

(522 kW)

Maximum HP

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)

Cockpit Depth

29"

(0.74 m)

Hull Draft

23"

(0.58 m)

Transom Deadrise

19.5 degrees

(SeaV progression)

Maximum HP

700

(522 kW)

Fuel Capacity (Standard)

282 gal.

(1067 l)

Weight (w/o Engines)

8221 lb.

(3729 kg)

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Marlin 300

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Line drawing of Marlin 300 boat

Integrated swim platform w/ladder

Aft deck lift out box

290-qt. insulated fish box

Foldaway aft bench seat

32-gal. livewell

Rigging stations w/lockable drawers, sink & insulated bait box

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

Lockable underseat storage

Flush mount electronics area

Galley w/sink, stove, refrigerator & microwave

Enclosed head w/sink & shower

Cabin w/forward & aft berths

Bow pulpit w/roller & windlass

Engine Options

300 Yamaha Four-Stroke

TWIN

300 Yamaha Four-Stroke
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

300 Yamaha Four-Stroke

TWIN

300 Yamaha Four-Stroke
Engine Size

4.2L

Prop Size

15 1/2 X 17 SWS II SDS

Weight as Tested

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

Test Date09/22/2010
HardtopNo
Bow PulpitYes
Bottom PaintNo
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
350 Yamaha Four-Stroke

TWIN

350 Yamaha Four-Stroke
Top Speed

54.9 MPH @ 6000 RPM

Optimum Cruise

29.6 MPH @ 3500 RPM

GPH at Optimum Cruise

17.6

MPG at Optimum Cruise

1.68

350 Yamaha Four-Stroke

TWIN

350 Yamaha Four-Stroke
Engine Size

4.3L

Prop Size

15 1/4 X 19 SWS II SDS

Weight as Tested

11411 lb. (including persons, fuel, water, gear, engines & accessories)

Test Date05/02/2024
HardtopNo
Bow PulpitNo
Bottom PaintNo
Optimum Cruise

29.6 MPH @ 3500 RPM

RPM MPH GPH MPG
1000 6.3 2.5 2.52
1500 8.6 4.3 2.00
2000 10.1 6.9 1.46
2500 13.9 10.7 1.30
3000 18.2 13.8 1.32
3500 29.6 17.6 1.68
4000 34.7 22.5 1.54
4500 40.0 28.7 1.39
5000 45.2 37.6 1.20
5500 50.3 51.1 0.98
6000 54.9 62.1 0.88

Safety

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

  • Basic flotation

  • Bow rail - 316 grade stainless steel

  • Cockpit toe rails

  • Composite stringer system & transom - water impervious
  • Nonskid fiberglass liner
  • Nonskid recessed walkaround

  • Self-bailing cockpit w/cockpit drains (4)

  • Stainless steel through-hull fittings
Grady-White Marlin 300, 30ft walkaround cabin bow rail.

Bow rail - 316 grade stainless steel

Grady-White Marlin 300, 30ft walkaround cabin toe rails.

Cockpit toe rails

Grady-White Freedom 415, 41ft dual console nonskid fiberglass liner.

Nonskid fiberglass liner

Grady-White Marlin 300, 30ft walkaround cabin nonskid liner.

Nonskid recessed walkaround

Grady-White Marlin 300, 30ft walkaround cabin cockpit overall.
Grady-White Freedom 415, 41ft dual console stainless steel through-hull fittings.

Stainless steel through-hull fittings

Cabin

  • Accessory outlet - 5V duplex USB port

  • Berth - aft double berth

  • Berth - forward vee berth

  • Carbon monoxide detector
  • Door - lockable w/screen & companionway hatch

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

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

  • 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

  • Lighting - dome (2)

  • Lighting - reading (3)

  • Microwave oven

  • Mirror

  • Refrigerator - stainless steel

  • Rod storage - aft berth horizontal (4)

  • Rod storage - folding cabin rack (4)

  • Rod storage - forward horizontal (6)

  • 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)

  • Storage - galley cabinets & counter

  • Storage - under berth compartments

  • Storage nets

  • Stove - electric glass top

  • Table - cherry

  • Teak & holly sole

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

  • Water tank - 32-gallon (121.1 l) freshwater

  • Windows - tinted frameless acrylic w/shade

Grady-White Marlin 300, 30ft walkaround cabin accessory outlet.
Grady-White Marlin 300, 30ft walkaround cabin aft berth.

Berth - aft double berth

Grady-White Marlin 300, 30ft walkaround cabin forward berth.

Berth - forward vee berth

Grady-White Freedom 375, 37ft dual console carbon monoxide detector.

Carbon monoxide detector

Grady-White Marlin 300, 30ft walkaround cabin door.

Door - lockable w/screen & companionway hatch

Grady-White Marlin 300, 30ft walkaround cabin forward hatch.

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

Grady-White Marlin 300, 30ft walkaround cabin galley.

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

Grady-White Marlin 300, 30ft walkaround cabin 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, 30ft walkaround cabin dome light.

Lighting - dome (2)

Grady-White Marlin 300, 30ft walkaround cabin reading light.

Lighting - reading (3)

Grady-White Marlin 300, 30ft walkaround cabin microwave.

Microwave oven

Grady-White Marlin 300, 30ft walkaround cabin mirror.

Mirror

Grady-White Marlin 300, 30ft walkaround cabin refrigerator.

Refrigerator - stainless steel

Grady-White Marlin 300, 30ft walkaround cabin aft berth.

Rod storage - aft berth horizontal (4)

Grady-White Marlin 300, 30ft walkaround cabin cabin rack.

Rod storage - folding cabin rack (4)

Grady-White Marlin 300, 30ft walkaround cabin rod storage.

Rod storage - forward horizontal (6)

Grady-White Marlin 300, 30ft walkaround cabin 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, 30ft walkaround cabin galley.

Storage - galley cabinets & counter

Grady-White Marlin 300, 30ft walkaround cabin under berth storage.

Storage - under berth compartments

Grady-White Marlin 300, 30ft walkaround cabin aft berth.

Storage nets

Grady-White Marlin 300, 30ft walkaround cabin galley.

Stove - electric glass top

Grady-White Marlin 300, 30ft walkaround cabin table.

Table - cherry

Grady-White Marlin 300, 30ft walkaround cabin.

Teak & holly sole

Grady-White Marlin 300, 30ft walkaround cabin window.

Windows - tinted frameless acrylic w/shade

Cockpit & Deck

  • 100% hand laid SeaV² hull & deck

  • Accessory outlet - 5V duplex USB port

  • Accessory outlet - 12V

  • Anchor windlass w/rode, line, and remote switches at helm & windlass

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

  • Bow pulpit w/roller

  • Cleats

  • Cockpit bolsters

  • Cockpit freshwater shower w/hot & cold mixer

  • Cockpit lights - blue LED

  • Cockpit side door - port w/boarding ladder

  • Companion grab rail

  • Deck hardware - 316 grade stainless steel through-bolted
  • Dockside power w/galvanic isolator

  • Drink holders - stainless steel (9)

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

  • Factory engine pre-rigging
  • Fighting chair reinforcement

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

  • Flush mount electronics area

  • Footrests - helm & companion (fold down)

  • Freshwater level indicator

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

  • Hardtop w/painted aluminum frame, radio box, storage nets, spreader lights, hardtop mounted rod holders (6), side mounted rod holders (4), outrigger plates & drop, front & side curtains (ivory)

  • Hydraulic trim tabs w/indicator & retractor

  • Integrated outboard mounting system w/swim platform & ladder

  • International lighting

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

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

  • Rod holders - cockpit (4)

  • Rod storage racks - horizontal (3)

  • Rubrail - high density PVC w/stainless steel insert

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

  • Seating - foldaway aft bench seat w/cushion

  • Seating - foredeck cushions

  • Seating - port livewell cushion

  • Seating - starboard rigging station cushion

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

  • Steering wheel - 316 grade stainless steel w/knob

  • Stern eyes - 316 grade stainless steel

  • Storage - aft deck lift out box

  • Storage - forward anchor locker w/rode storage

  • Storage - lockable storage under helm & companion seats

  • Storage - under step compartment

  • Transducer mounting flats

  • Transom door - fiberglass

  • Washdown - pressurized raw water w/hose

  • Water tank - 32-gallon (121.1 l)

  • Windshield - tempered glass w/side vents

  • Windshield wipers w/starboard washer

Grady-White hand laid SeaV2 hull and deck

100% hand laid SeaV² hull & deck

Grady-White Marlin 300, 30ft walkaround cabin accessory outlet.

Accessory outlet - 5V duplex USB port

Grady-White Marlin 300, 30ft walkaround cabin accessory outlet.

Accessory outlet - 12V

Grady-White Marlin 300, 30ft walkaround cabin windlass storage.

Anchor windlass w/rode, line, and remote switches at helm & windlass

Grady-White Marlin 300, 30ft walkaround cabin batteries.

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

Grady-White Marlin 300, 30ft walkaround cabin bow roller.

Bow pulpit w/roller

Grady-White Marlin 300, 30ft walkaround cabin cleats.

Cleats

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

Cockpit bolsters

Grady-White Marlin 300, 30ft walkaround cabin freshwater shower.

Cockpit freshwater shower w/hot & cold mixer

Grady-White Marlin 300, 30ft walkaround cabin cockpit lights.

Cockpit lights - blue LED

Grady-White Marlin 300, 30ft walkaround cabin side door.

Cockpit side door - port w/boarding ladder

Grady-White Marlin 300, 30ft walkaround cabin companion grab rail.

Companion grab rail

Grady-White Freedom 415, 41ft dual console deck hardware.

Deck hardware - 316 grade stainless steel through-bolted

Grady-White Marlin 300, 30ft walkaround cabin dockside power.

Dockside power w/galvanic isolator

Grady-White Marlin 300, 30ft walkaround cabin drink holder.

Drink holders - stainless steel (9)

Grady-White Marlin 300, 30ft walkaround cabin engine flush system.

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

Grady-White Marlin 300, 30ft walkaround cabin aft fish box.

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

Grady-White Marlin 300, 30ft walkaround cabin helm.

Flush mount electronics area

Grady-White Marlin 300, 30ft walkaround cabin footrest.

Footrests - helm & companion (fold down)

Grady-White Marlin 300, 30ft walkaround cabin water level.

Freshwater level indicator

Grady-White Marlin 300, 30ft walkaround cabin rod holders.

Hardtop w/painted aluminum frame

Grady-White Marlin 300, 30ft walkaround cabin trim tabs.

Hydraulic trim tabs w/indicator & retractor

Grady-White Marlin 300, 30ft walkaround cabin integrated outboard mounting system.

Integrated outboard mounting system w/swim platform & ladder

Grady-White Marlin 300, 30ft walkaround cabin 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, 30ft walkaround cabin rigging station.

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

Grady-White Marlin 300, 30ft walkaround cabin rod holders.

Rod holders - cockpit (4)

Grady-White Marlin 300, 30ft walkaround cabin toe rails.

Rod storage racks - horizontal (3)

Grady-White Marlin 300, 30ft walkaround cabin rubrail.

Rubrail - high density PVC w/stainless steel insert

Grady-White Marlin 300, 30ft walkaround cabin helm and companion chairs.

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

Grady-White Marlin 300, 30ft walkaround cabin aft bench seat.

Seating - foldaway aft bench seat w/cushion

Grady-White Marlin 300, 30ft walkaround cabin foredeck cushions.

Seating - foredeck cushions

Grady-White Marlin 300, 30ft walkaround cabin port side cushion.

Seating - port livewell cushion

Grady-White Marlin 300, 30ft walkaround cabin starboard cushion.

Seating - starboard rigging station cushion

Grady-White Marlin 300, 30ft walkaround cabin helm master.
Grady-White Marlin 300, 30ft walkaround cabin helm.

Steering wheel - 316 grade stainless steel w/knob

Grady-White Marlin 300, 30ft walkaround cabin stern eyes.
Grady-White Marlin 300, 30ft walkaround cabin aft liftout box.

Storage - aft deck lift out box

Grady-White Marlin 300, 30ft walkaround cabin windlass storage.

Storage - forward anchor locker w/rode storage

Grady-White Marlin 300, 30ft walkaround cabin under seat storage.

Storage - lockable storage under helm & companion seats

Grady-White Marlin 300, 30ft walkaround cabin under step storage.

Storage - under step compartment

Grady-White Marlin 300, 30ft walkaround cabin transom door.

Transom door - fiberglass

Grady-White Marlin 300, 30ft walkaround cabin windshield.

Windshield - tempered glass w/side vents

Grady-White Marlin 300, 30ft walkaround cabin windshield.

Windshield wipers w/starboard washer

Optional Features

  • Air conditioning - 8000 BTU in cabin

  • Bow thruster

  • CE certification package (European Conformity)
  • Generator - 5kW diesel, 12-gallon (45.4 l) fuel capacity

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

  • Hull color - Celestial Blue, Coastal Fog, Ocean Mist, or Sage Gray gelcoat

  • International AC electrical conversion - 220V (50Hz)
  • Lighting - underwater blue LED (3)

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

  • Steering - Helm Master® EX w/Full Maneuverability & Yamaha Siren Marine Connected Boat® Monitoring System

  • TV - 19" LED flat screen w/HDMI inlet

Grady-White Marlin 300, 30ft walkaround cabin air conditioner.

Air conditioning - 8000 BTU in cabin

Grady-White Marlin 300, 30ft walkaround cabin bow thruster.

Bow thruster

Grady-White Marlin 300, 30ft walkaround cabin generator.

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

Grady-White Freedom 345, 34ft dual console hull colors.

Hull color - Celestial Blue, Coastal Fog, Ocean Mist, or Sage Gray gelcoat

Grady-White Marlin 300, 30ft walkaround cabin outriggers.
Grady-White Marlin 300, 30ft walkaround cabin helm master.
<p>A Legendary 30-foot Walkaround Boat: The Marlin 300</p>

A Legendary 30-foot Walkaround Boat: The Marlin 300

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