2005 Cobalt 343 Sold Boat in Woburn, MA 01801 US
Built in 2005
343
2 Engines (2x Mercury)
34.3 feet
Gas
Fiberglass/Reinforced
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 2005 Cobalt 343 | |||
|---|---|---|---|
| Price | $74,950 | $75,000 | $82,500 |
| Location | Woburn | Newburyport | Marion |
| Nominal Length | 34' | 33' | 22' |
| Draft | 3' | - | - |
| Engine Make | Mercury | New Horizons | Yamaha |
| Total Engine Power | 425 hp | 380 hp | 150 hp |
| Days on Market | 129 | 848 | 134 |
| Get in touch |
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"After Hours" is a 2005 Cobalt 343 Performance Cruiser and an honest example of a boat kept up by a veteran owner.
2024 Rock and Roll triple axle trailer included
415 Hours with service records available.
Notable Items/Upgrades to Mention:
- New Upholstery Throughout (2025)
- Aqua Decking Installed (2025)
- Eddie Marine Helm Wheel (2025)
- New AGM Batteries (2024)
- Garmin XSV Chartplotter (2023)
- Upgraded Fusion Sound and Rockford Speakers Installed (2023)
- Cockpit/Mooring Cover
- Bottom Painted Annually
- Teak Steps and Runway
- KBS Clear Coat
- Taco Marine Shade Fins (x2)
- Brackish Water Boat
Highlights
- Spacious cockpit with wraparound seating
- Large swim platform with swim ladder
- Cabin with sleeping accommodations for 2
- Enclosed Head
- Wet Bar and entertainment-friendly layout
- Deep-V hull for a smooth, stable ride (25 degree deadrise)
- Ample storage throughout
- Freshwater system and shore power hookup
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
| Date | Event | Price |
|---|---|---|
| 5/12/26 | Initial price | $74,950 |
2005 Cobalt 343 Video Tours
Cobalt 343: BoatTEST Review
Overview
Cobalt has long been recognized for producing world-class sport boats, though it has not been widely known in the high-performance segment—until now. The Cobalt 343 represents a significant advancement for the brand, emerging from three years of dedicated research and development. This model is designed to combine high-performance capabilities with the luxury and attention to detail that Cobalt is known for, aiming to deliver an exhilarating and refined boating experience.
Exterior Design and Deck Features
The Cobalt 343 features a thoughtfully designed exterior that prioritizes both performance and comfort. Wide side decks facilitate easy movement around the boat, while a fender locker equipped with gas-assisted lifts provides convenient storage. The deck layout includes two individual sun pads and two stern benches separated by a spacious walk-through, with double-hinged seats offering ample storage beneath. Practical amenities such as an inflator for water toys and a tool kit are integrated into the port bench compartment, which also houses battery switches, main breakers, and canvas pole storage. The two-level transom and swim platform provide close access to the water, protected by a wraparound stainless steel bar that serves as a handhold and dock guard. A dive-style ladder deploys effortlessly via a lever, and stainless steel vents and fins ensure fresh air circulation to the engine compartment. Additional features include a swim shower and water hookup located in the starboard compartment.
Interior Living Spaces
Inside the cabin, the Cobalt 343 offers a level of refinement more commonly found on mega-yachts or aircraft. The cabin door is a solid, non-sliding design that opens to reveal a port-to-starboard V-shaped bench seating area. A flat-panel television is mounted in one corner, providing entertainment options for evening relaxation. The enclosed head includes a port-a-potty, sink, and vanity, ensuring privacy and convenience. At the stern, rear-facing bench seats create a spacious conversation area, with the double-hinged seating providing cavernous storage below.
Helm and Controls
The helm station of the 343 is designed with a futuristic, cockpit-like layout. To the left of the helm, a bank of rocker switches is complemented by two rows of gauges, including water and air temperature indicators as well as digital depth gauges. The helm features Gaffrig instrumentation and LaVorsi precision engine controls, allowing the operator precise command over the vessel. The pilot seat is equipped with electric lifts that enable a quick transition from seated to standing driving positions. This ergonomic and technologically advanced helm setup enhances control and comfort during operation.
Power and Performance
Performance on the Cobalt 343 is driven by twin 496 V8 engines, each producing 425 horsepower. The boat incorporates Cobalt's first-ever step-tall hull design, augmented by a padded keel and a knot's transom, which together contribute to exceptional stability and a smooth ride even in choppy seas. The hull design ensures the boat remains firmly planted on the water during straight runs and maintains excellent grip through turns. The engines feature a closed cooling system, an air-actuated single-point water drain system with an included air pump, and a single serpentine belt driving all components. The engine control module utilizes a motor oil microprocessor to optimize fuel mixture, knock control, and ignition timing independently for each cylinder, resulting in precise and efficient performance. The 343 measures 35 feet 4 inches in length overall with a beam of 9 feet 8 inches and a draft of 28 inches with the drive up, extending to 37 inches with the drive down. It weighs approximately 10,200 pounds with twin CERN drives and carries 200 gallons of fuel, meeting yacht certification standards. Economically, the boat cruises at 3,500 RPM, achieving 40.9 miles per hour with a fuel consumption of 31.5 gallons per hour, offering a range of 234 miles on a full tank. At wide-open throttle, it reaches 5,100 RPM and a top speed of 62.4 miles per hour.
Conclusion
The Cobalt 343 successfully blends high-performance engineering with the luxury and meticulous craftsmanship that the brand is known for. Its innovative hull design and powerful twin engines deliver thrilling speed and handling, while the thoughtfully designed interior and exterior spaces provide comfort and convenience for extended outings. With a top speed exceeding 60 miles per hour and a comprehensive suite of amenities, the 343 stands out as one of the most luxurious high-performance sport boats currently available.
Overview from around the web 2005 Cobalt 343
The 2005 Cobalt 343 has garnered positive feedback from boat enthusiasts and owners alike
Customers often highlight its exceptional performance and handling, which make for a smooth and enjoyable ride on the water. Many appreciate the boat's spacious and thoughtfully designed interior, providing ample seating and comfort for family and friends during outings. Owners frequently commend the high-quality materials and craftsmanship that Cobalt is known for, contributing to a luxurious experience. The cockpit layout is praised for its user-friendly features, making navigation and entertainment seamless. Additionally, the 343’s powerful engine options enhance both speed and responsiveness, making it ideal for water sports and leisurely cruising. People also rave about the sleek and stylish design that Cobalt boats are recognized for, with many finding the 343 to be visually appealing both on and off the water. Overall, the 2005 Cobalt 343 is celebrated for combining luxury, performance, and comfort, making it a favorite among those seeking a reliable and enjoyable boating experience.
Made For
The 2005 Cobalt 343 is designed for discerning boat enthusiasts who seek a blend of luxury, performance, and versatility on the water. This model is perfect for families and friends looking to enjoy day outings, weekend getaways, or entertaining on the open water. With spacious seating, a well-appointed interior, and powerful engines, the Cobalt 343 caters to those who appreciate quality craftsmanship and innovative design. Ideal for avid boaters who value comfort and style, this vessel excels in both cruising and watersports, making it suitable for everyone from casual cruisers to thrill-seekers. Whether it's a relaxing day at the lake or a spirited adventure on the sea, the 2005 Cobalt 343 appeals to individuals and families who want to create unforgettable memories on the water.
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Boat Location
Contact Yachts360 about 2005 Cobalt 343
1515 SE 17th Street, Suite 125, Fort Lauderdale, FL, 33316
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