1978 Allison 20' (6.10 m) GT 20
CROWNSVILLE, Maryland, United States
Rare to market.
Flag of Registry: United States
- Bass Boats
- Power
- Used
- Gas/Petrol
- Fiberglass Hull
- HIN/IMO: ATL20A11M78A
Vessel ID# Last Updated: 2026-01-20 08:02:45
Description
Listed on 1/13/2026, this well kept 1978 20' Allison GT is a rare find in performance trailer-able classic speedboats. (Seller reports top speed at 75 mph!) A 200 hp Mariner outboard, Tires just replaced on her single axel trailer and only Aviation gas has been run through her engine. Just cleaned and detailed, she is ready for her next owner to enjoy! Come take a look asap! Photos taken on 1/12/2026. Located in Annapolis/Crownsville. Will sell quickly to her first buyer that has been looking for this rare find!
A 1978 20-foot Allison is a classic, high-performance bass boat known for speed, with models like the GT20 offering serious performance, often needing engine work or interior refreshing in current market, and valued for its heritage in the bass boat industry. These boats, while requiring potential maintenance on older models, are sought after for their unique hull designs, capable of high speeds with the right setup. Key Characteristics
- High Performance: Allison boats, especially models like the GT20, are famous for their speed and efficiency, utilizing unique hull designs for better performance.
- Classic Bass Boat: They are considered pioneers in the bass boat market, with roots going back to the 1960s when Darris Allison developed the first high-performance fiberglass bass boat.
- Condition Varies: Expect older models to need updates, with common issues being worn interiors or aging outboard motors, but they remain desirable for enthusiasts.
- Engine Power: Often paired with powerful outboards, these boats can be set up for significant speed, with some owners reporting impressive performance.
In essence, a 1978 20' Allison is a piece of bass boat history, a fast hull that's a great project or fishing platform for someone looking for classic performance.
Brewer Yacht Sales is pleased to assist you in the purchase of this vessel. This boat is centrally listed by Yacht View Brokerage. It is offered as a convenience by this broker/dealer to its clients and is not intended to convey direct representation of a particular vessel
Specifications
HIN/IMO: ATL20A11M78A
In Stock: Yes
LOA: 20' 6'' (6.25 Meters)
Type: Power- Used
Year: 1978
Beam: 7'
Draft Max: 2'
Maximum Speed: 75 MPH
Cruise Speed: 45 MPH
Fuel Type: Gas/Petrol
Hull Material: Fiberglass
Hull Finish: Gel coat
Hull Shape: Planing
Dry Weight: 950
Trailer: Yes
Photos click to view all
Engines
Engine 1
- Engine Make: Mariner
- Engine Model: 2 stroke oil injected
- Engine Type: Outboard 2 Stroke
- Drive Type: Surface
- Power HP: 200.00
- Power KW: 149.14
- Fuel Type: Gas/Petrol
- Engine Location: Middle
Full Details
Listing MLS by Yachtr.com
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