~It all began in the Clarkston, Washington, shop of legendary boatbuilder Ernie Duckworth in the late 1960s as he began building a couple of rugged welded aluminum jet boats for running the demanding whitewater of the nearby Snake River Hells Canyon. His rugged designs soon caught the eye of fellow boaters, and the "Duckworth" brand was soon developing its legendary loyal following.
~Today, Duckworth Boat Works, Inc. ("DBW") manufactures and distributes through independent marine dealers "Duckworth" brand welded aluminum fishing, sport and commercial boats. Duckworth boats include a complete line of 17-24 foot inboard jet, outboard, sterndrive and specialty watercraft for shallow-draft river running and deep-V bluewater use, with a full range of fit and finish options. Over 4,000 Duckworth brand boats have been produced during the last 40 years, providing owners the ultimate in performance, versatility, comfort and appeal. DBW offers repair and refurbishment to restore old and damaged Duckworths to almost new factory condition.
Our welded aluminum hulls are warranted in writing against structural defects in material or workmanship for as long as the original purchaser owns the boat. For details and coverage guidelines, including transferability of the limited warranty, please see the written Duckworth Limited Warranty and Owner's Manual at your local dealer.
~Measuring Boat Length
The length is measured from end to end excluding sheer. This is a straight line measurement of the overall length from the foremost part of the boat to the aftermost part of the boat, measured parallel to the centerline. Bow sprits, bumpkins, rudders, outboard motor brackets, and similar fittings or attachments are not include in the measurement. Length shall be stated in feet and inches.
Aids To Navigation
Recognized Distress Signals
Riding On Decks Or Gunwales
Alcohol and Boating
Operation and Maintenance
Maintenance Schedule to be Done by Owner
Maintenance Schedule to be Done by Dealer
Personal Floatation Devices (PFDs)
High Water Temperature
Low Oil Pressure
Engine Will Not Turn Over
Engine Turns Off But Won't Start
Shifter Control Will Not Move
Fuel Gauge Not Working
Buzz Light Low Oil High Water Temperature
Engine Starts But Runs Rich
Engine Starts But Runs Rough
Engine Starts and Runs WIth Hesitation In Midrange
Engine Will Not Reach Top RPM
Volt Meter Reads Low Scale
Tachometer Reads Low Scale - Engine O.K.
Tachometer Sluggish or Inconsistent
Navigation Lights Don't Work
Bilge Blower Does Not Operate
U.S. Coast Guard Auxiliary
U.S. Power Squadron
Boat Ramp Etiquette
~he Advantage Inboard makes the journey possible. It is the most capable and unstoppable inboard jet in its class. With its wide 14° hull, the Advantage Inboard attacks shallow water with the performance you expect from a Duckworth. And getting on plane, and staying there, is of little consequence. The 18' and 19' Advantage Inboards feature a GM 305 cubic inch, V-8 engine that produces 280 horsepowera perfect thrust to weight ratio for a boat weighing less than 2500 lbs. The 20' and 21' Advantage Inboards achieve optimum performance with GM's 350 cubic inch V-8. With 310 horses powering the American Turbine SD-309 jet, you get a fast, smooth handling boat that has more capabilities than its competition. The Hydro-Flow hull comes standard, as does the exclusive Hd intake and stainless rock gratethe same system found on our legendary Silverwing models.
space is often a concern with inboard models, particularly in 18' and 19' lengths, but in every length the Advantage Inboard is as comfortable as it is spacious. The interior features and standard equipment are nothing short of exceptional. The seating is signature Duckworth quality, as is the heavy-duty convertible top. The Advantage Inboard is quite comfortable on the ears too; with an in-line exhaust muffler system included as standard. With so much versatility going for it, it can go virtually anywhere. When you're along for the ride, just remember: take only pictures and leave only wake.
Beam: 7 ft. 10 in.
Fuel tank capacity: 62
Extruded chine, gunwale, toe rail, and keel strip
Duckworth HD intake w/ SS rock grate
3 piece, welded, walk-through windshield w/ grab handles
Recessed self bailing diamond tread bow deck
Driver windshield wiper
Standard size bow box
3" bow and stern rails
Top, 1/2 side and deck paint
Side striping and vinyl graphics
Standard swim platform/ pump guard
Noise suppression foam in bow (20' & 21')
Flotation foam package (18' & 19')
Heavy-duty rotary steering
Heater / defroster w/ 4 vents
Full gauge instrumentation package w/ 12V outlet
Navigation and anchor lights
Carpeted motor box w/ sound deadening foam
Locking glove box
In-line muffler system
Heavy-duty convertible top with side curtains and backdrop
2 folding seats on pedestals
Rear storage jump seats w/ backrest
Paint and Finish
Choice of slate or sandstone interior package
Choice of carpet or vinyl floor
Carpeted sidewalls and side trays
Single lever control
Fuel / water separator
1250 GPH bilge pump
Heavy-duty marine battery
See your dealer for a complete list
18' & 19'- GM 305 V-8
20' & 21'- GM 350 V-8
18' & 19'- American Turbine SD-309
20' & 21'- American Turbine SD-309.
Fisherman's Transom and Duckworth Carpet
Light Bar With Net And Rod Holders
Down Rigger Bracket
Bow Storage/Fish Box
Locking Rod Storage
Gunwale Mounted Fish Cleaning Station
Wash Down System
Motor Box Cover Pad
Dierks Anchor System
Swim Step, Folding Ladder, And Grab Handle.
Welded Kicker Bracket.
Model name: GM 305 V-8
Model year: 2007
Fuel Type: Gas