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6080 Lanier Island Parkway,
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6900 Lanier Island Parkway,
Buford, GA 30518

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3149 Shoreland Drive,
Buford, GA 30518

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15597 North Highway 11,
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7700 North Highway 11,
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486 Park Creek Marina Rd,
Equality, AL 36026

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124 Edgewater Drive,
Jackson Gap, AL 36861

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7280 Highway 49 South,
Dadeville, AL 36853

Singleton Marine Lake Oconee

5820 Lake Oconee Parkway,
Greensboro, GA 30642

Singleton Marine Lake Allatoona

100 Ridge Road,
Canton, GA 30114

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5529 Lanier Island Parkway,
Buford, GA 30518

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Equality, Al 36026

Singleton Marine Blue Creek Marina

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Location Details & Services
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Equality, Al 36026

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Singleton Marine Blue Creek Marina

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Location Details & Services

Select a Store

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Use my current location

OneWater Service Center

6080 Lanier Island Parkway,
Buford, GA 30518

Singleton Marine Holiday Marina

6900 Lanier Island Parkway,
Buford, GA 30518

Singleton Marine Used Boat Super Center Lake Lanier

3149 Shoreland Drive,
Buford, GA 30518

Singleton Marine Lake Keowee Service Center

15597 North Highway 11,
Salem, SC 29676

Singleton Marine Lake Keowee

7700 North Highway 11,
Sunset, SC 29685

Singleton Marine Parker Creek Marina

486 Park Creek Marina Rd,
Equality, AL 36026

Singleton Marine Jacksons Gap

124 Edgewater Drive,
Jackson Gap, AL 36861

Singleton Marine Blue Creek Marina

7280 Highway 49 South,
Dadeville, AL 36853

Singleton Marine Lake Oconee

5820 Lake Oconee Parkway,
Greensboro, GA 30642

Singleton Marine Lake Allatoona

100 Ridge Road,
Canton, GA 30114

Singleton Marine - Atlanta

5529 Lanier Island Parkway,
Buford, GA 30518

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SPECS

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Location
Buford, Georgia

Condition

Condition
Used

calender

Year
2012

type

Make
Harris

type

Model
Grand Mariner 250

stock

HIN
HAMP6012G112

type

Category
Pontoon

boat-length

Length
27 '0"

beam-length

Beam
8' 6"

engine

Engines
1

dark-power

HP
300

engine-hours

Engine Hours*
290

stock

Stock Number
U34717

inventory-status

Inventory Status
Available

Description

Step aboard the ultimate in leisure and luxury with the 2012 Harris Grand Mariner 250, a pontoon boat that perfectly blends performance, comfort, and style. If you’re searching for a pontoon boat for sale that offers both relaxation and excitement on the water, this Harris boat for sale is sure to impress. Renowned for its innovative design and superior craftsmanship, Harris has long been a leader in the pontoon market, and the Grand Mariner 250 is a shining example of why. Whether you’re planning family outings, entertaining friends, or simply enjoying peaceful moments on the lake, this used pontoon boat delivers an unforgettable boating experience.

Overview
The 2012 Harris Grand Mariner 250 stands out with its generous 27-foot length, providing ample space for guests, gear, and all your favorite on-water activities. This used pontoon boat is in excellent condition, reflecting the care and attention it has received over its lifetime. With a sleek profile and modern lines, the Grand Mariner 250 is as visually appealing as it is functional. Its spacious deck layout is designed for maximum comfort, making it the ideal choice for those who value both style and utility in their boating adventures.

Performance
Powering this Harris boat for sale is a robust single engine boasting an impressive 300 horsepower. With only 290 engine hours, this pontoon boat has plenty of life left for many seasons of enjoyment. The powerful engine ensures smooth acceleration, responsive handling, and reliable performance whether you’re cruising across the lake or towing water toys. The Grand Mariner 250’s performance capabilities make it a standout among pontoon boats, offering the perfect balance of speed and stability for a wide range of activities. Whether you’re looking to glide effortlessly through calm waters or pick up the pace for some high-energy fun, this boat delivers.

Features and Specifications
The Harris Grand Mariner 250 is designed with both comfort and convenience in mind. Its spacious deck provides plenty of room for lounging, socializing, and enjoying the scenery. The pontoon’s layout is thoughtfully arranged to maximize usable space, making it easy to move around and interact with guests. The seating is plush and supportive, ensuring everyone on board can relax in style. Storage compartments are strategically placed throughout the boat, allowing you to stow away personal items, water toys, and safety equipment with ease. The Grand Mariner 250’s build quality is evident in every detail, from its durable construction to its elegant finishes.

Benefits
Owning a Harris Grand Mariner 250 pontoon boat opens up a world of fun and relaxation. Imagine spending sunny afternoons cruising with family, hosting lively gatherings with friends, or escaping for a quiet evening on the water. The spacious deck and comfortable seating make socializing effortless, while the powerful engine ensures you can explore new destinations with confidence. Pontoon boats are known for their stability and safety, making them an excellent choice for families with children or anyone who values peace of mind on the water. The Grand Mariner 250’s versatility means you can easily switch between leisurely cruises, energetic water sports, and tranquil fishing trips, all in one boat.

Practical Uses
This Harris boat for sale is as practical as it is enjoyable. The generous storage options make it easy to keep your gear organized and accessible, while the intuitive layout simplifies docking and maneuvering. Pontoon boats are celebrated for their fuel efficiency, and the Grand Mariner 250 is no exception, allowing you to spend more time on the water and less time at the pump. The boat’s design also makes it easy to board and disembark, ensuring a hassle-free experience for guests of all ages. Whether you’re planning a day trip or a weekend getaway, this pontoon boat is equipped to handle all your needs with ease.

Ideal Usage
The 2012 Harris Grand Mariner 250 shines in a variety of scenarios. It’s perfect for family outings, offering a safe and comfortable environment for children and adults alike. The spacious deck is ideal for hosting parties, barbecues, or sunset cruises with friends. Fishing enthusiasts will appreciate the stability and ample space for casting lines and storing gear. If you’re seeking a luxurious escape, the Grand Mariner 250 provides the perfect setting for relaxing in style, enjoying the sights and sounds of nature, and creating lasting memories. Its versatility makes it a great choice for anyone looking to maximize their time on the water.

Conclusion
In summary, the 2012 Harris Grand Mariner 250 is a standout pontoon boat for sale that combines powerful performance, spacious comfort, and practical features in one impressive package. With its 27-foot length, 300-horsepower engine, and thoughtful design, this Harris boat for sale is ready to deliver endless fun and relaxation for you and your loved ones. Whether you’re cruising, entertaining, fishing, or simply unwinding, the Grand Mariner 250 offers everything you need for an exceptional boating experience. Don’t miss your chance to own this remarkable pontoon boat—contact the dealer today to learn more and take the first step toward your next adventure on the water.

* Freight, prep, dealer fee and tax additional to stated price

Vessel ID# U34717     Last Updated: 02-21-2026 03:01 UTC
This product description was created, in whole or in part, using generative artificial intelligence (AI) and is provided for informational purposes only. While we strive for accuracy, please note that details such as product features, specifications, and availability may vary. We encourage you to verify all information before making a purchase. All sales are subject to our standard Purchase Agreement and other dealer required documentation.
Please note that the images displayed may be illustrative or representative of the actual vessel. Variations in features, options, color, condition, and engine hours may occur between the images and the actual vessel. For accurate and specific details regarding each vessel, including whether the images are of the actual vessel, please refer to the accompanying description. We encourage prospective buyers to contact us directly to verify image authenticity and to request additional photographs of the actual vessel.
* Note that the stated engine hours have not been verified. Please confirm with your sales consultant.
Not all boats include a trailer. Inquire about a trailer with purchase.
Offered By Singleton Marine
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