This boat has been sold but check out these similar boats nearby

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1978 Allison 20Sold

$7,500

Used
We will let you know when another 1978 Allison 20 is available in Crownsville, MD

Boat in Crownsville, MD 21032 US

builtBuilt in 1978
Year the boat was built
model

20

Boat model
engine

1 Engine (Mariner)

Engine type and count
length

20 feet

Overall boat length
fuel

Gas

Fuel type
material

Fiberglass/Reinforced

Hull material

Listed on 1/13/2026, this well kept 1978 20' Allison GT is a rare find in performance trailerable 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.

Nominal Length
20ft
Length Overall
20.5ft
Beam
7ft
Max Draft
2ft
Dry Weight
950lb
Seating Capacity
6
Hull Material
fiberglass
Hull Shape
planing
Engine 1
Engine Make
Mariner
Total Power
200hp
Engine Type
outboard-2s
Fuel Type
gasoline
Drive Type
surface
Propeller Type
3-blade
Propeller Material
stainless-steel
Disclaimer

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

DateEventPrice
1/14/26Initial price$7,500

Overview from around the web 1978 Allison 20

Customers praise the 1978 Allison 20 for its classic design and sturdy construction, highlighting its excellent sailing performance and ease of handling

Many appreciate the boat’s spacious cockpit and comfortable interior for its size, making it ideal for day sailing and weekend trips. Owners often mention the Allison 20’s timeless appeal and reliable build quality, noting that it remains a cherished vessel for both novice and experienced sailors. Overall, feedback reflects a strong appreciation for the boat’s blend of functionality, style, and durability.

The Biggest Pros and Cons

The 1978 Allison 20 is a classic sailboat known for its solid construction and responsive handling. Here are some pros and cons to consider:

Pros

Sturdy Build: The Allison 20 features a robust fiberglass hull, providing durability and long-lasting performance.

Manageable Size: At 20 feet, it's easy to trailer and launch, making it accessible for day sailing and weekend trips.

Responsive Handling: Its design offers excellent maneuverability, ideal for both beginners and experienced sailors.

Classic Design: The timeless aesthetic appeals to those who appreciate vintage sailboats with character.

Comfortable Cockpit: The layout provides ample seating and space for a small crew or family outings.

Cons

Limited Interior Space: Being a smaller boat, cabin accommodations are minimal, which may not suit those looking for extended cruising comfort.

Older Equipment: Original fittings and rigging may require updates or maintenance to ensure safety and performance.

Performance in Light Winds: Due to its displacement and sail plan, it might be less responsive in very light wind conditions compared to more modern designs.

Availability of Parts: As a vintage model, sourcing specific replacement parts could be challenging.

Made For

The 1978 Allison 20 is perfect for sailors seeking a classic, reliable, and easy-to-handle sailboat. Ideal for both beginners and experienced sailors, it offers a great balance of performance and comfort, making it suitable for day sailing, weekend cruising, or casual racing. Its manageable size and sturdy design appeal to individuals or small families who appreciate timeless craftsmanship and enjoy spending time on the water.

Finance your dream boat!

Use our boat payment calculator to estimate monthly payments for 1978 Allison 20. Enter your down payment, choose a loan term, and adjust the interest rate to see an instant payment estimate — ideal if you're calculating boat payments before you enquire. Wondering how much does a Bass cost in today's market, or how much does a Allison cost for similar models? This boat financing calculator helps you compare scenarios in seconds, whether you're considering used boat financing or a new purchase.
Monthly payment
$85.12/mo
$
$
Loan amount$ 7,500
OR
%

Finance your dream boat!

Use our boat payment calculator to estimate monthly payments for 1978 Allison 20. Enter your down payment, choose a loan term, and adjust the interest rate to see an instant payment estimate — ideal if you're calculating boat payments before you enquire. Wondering how much does a Bass cost in today's market, or how much does a Allison cost for similar models? This boat financing calculator helps you compare scenarios in seconds, whether you're considering used boat financing or a new purchase.
Monthly payment
$85.12/mo
$
$
Loan amount$ 7,500
OR
%

Contact Yacht View Brokerage LLC Annapolis

2 Bonaparte Rd, Crownsville, MD, 21032

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Address

2 Bonaparte Rd
Crownsville, MD 21032

Boat Location

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Contact Yacht View Brokerage LLC Annapolis about 1978 Allison 20

2 Bonaparte Rd, Crownsville, MD, 21032

By checking this box, I consent to receive recurring marketing text messages, phone calls, and emails from Yacht View Brokerage LLC Annapolis at the number and email provided, including messages sent using an autodialer or prerecorded voice. Message frequency varies. Message and data rates may apply. Reply STOP to opt out or HELP for assistance. Consent is not a condition of purchase. We'll also send helpful email updates about your boat search. You can unsubscribe whenever you like. See Terms of Use and Privacy Policy.

Contact Yacht View Brokerage LLC Annapolis

2 Bonaparte Rd, Crownsville, MD, 21032

By checking this box, I consent to receive recurring marketing text messages, phone calls, and emails from Yacht View Brokerage LLC Annapolis at the number and email provided, including messages sent using an autodialer or prerecorded voice. Message frequency varies. Message and data rates may apply. Reply STOP to opt out or HELP for assistance. Consent is not a condition of purchase. We'll also send helpful email updates about your boat search. You can unsubscribe whenever you like. See Terms of Use and Privacy Policy.

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