1977 Bertram 31 Flybridge
$349,000
Boat in Charleston, SC 29492 US
31 Flybridge
2 Engines (2x Cummins)
30.6 feet
Diesel
Fiberglass/Reinforced
MoMo I is a 2022 complete refit of a 1977 Bertram 31. This boat is AWESOME. The refit included new Cummins mains, new paint, the addition of a generator and HVAC, new electronics, literally everything...a 3 year full stringers up restoration. The wooden bulkheads and stringers were replaced with Divinycell cored fiberglass structural members. The popularity of the Bertram 31 is unquestioned, but most models out there are dated by modern standards. Not MoMo I. She is a modern and proven sportfisherman. Why buy a more expensive center console when you can have diesel reliability, air conditioning, a galley and creature comforts? Come see her in beautiful and convenient Charleston, SC.
Nothing in powerboating history has equaled the worldwide popularity of the original deep-V, the Bertram 31. Offered in several model configurations, over two thousand 31s were produced during her two decades of production, many of which were Flybridge Cruisers. Key to the lasting popularity of these boats on the used market is her unsurpassed—almost legendary— rough-water seakeeping ability and her rugged construction. The spacious cockpit of the Bertram 31 is free of obstructions, and the cushioned engine boxes make a great place to sit and watch the baits. While the cabin is hardly plush, the accommodations are comfortable and efficiently arranged with a convertible dinette to port, galley and dinette opposite, and a V-Berth forward. Twin 330hp MerCruiser gas engines (22–24 knots cruise) powered the majority of the Bertram 31s with several GM, Cat, or Cummins diesels offered as options.
Few, if any, other boats have had such a profound influence on the design of power boats as has the Bertram 31. The first boat design to use a Deep-V hull, it is arguably the most famous modern boat design ever built, the 31 Bertram has achieved a near cult status, infecting boaters around the world. Designed by Ray Hunt and built by Richard Bertram, the 31 was in production for 25 years. Many are still on the water and in use throughout the world.
Exterior:
- Awlgrip in Snow White
- Bottom was media blasted and epoxy coated prior to new bottom paint
- Blue boot stripe
- Custom Palm Beach helm pod with single lever controls
- Custom hard top and tower
- Custom air vents
- Custom bow pulpit with integrated nav lights
- Custom helm layout
- Custom trim tab pockets with covers
- Recessed deck scuppers
- Replaced aft bulkhead and engine covers
- Bridge enclosure
- Pompenette helm chair
- Lewmar electric windlass
- Lewmar stainless steel plow anchor
- Stainless steel bow pulpit
- Stainless steel drop down cleats
- Rub rail with stainless steel insert
- Replaced windows and frames
- Replaced engine box covers
- Helm cover
- Transom underwater lights
- Two in-deck removable fish boxes
- Gunwale mounted rod holders
- Live bait well at transom
- Raw water washdown in cockpit
- Single deck hatch over v-berth
- Razor LED flood lights cockpit lighting
Salon:
- White interior cushions – 2022
- Dinette to port
- Galley to starboard
- Headliner has flush mount tri-color LED lighting – 2022
- Dometic 12k BTU HVAC
- Salon windows slide for ventilation
Galley:
- A simple but useful galley on a 31
- Single basin stainless steel sink
- Isotherm Fridge/Freezer
- Microwave
Stateroom:
- V-Berth forward
- Raritan electric head
Mechanical:
- Twin Cummins QSB remanufactured main engines at 380hp each - 2022
- ZF transmissions – 2022
- NextGen 3.5kW generator added – 2022
- 1 ¾” Stainless steel shafts
- 4-Blade bronze props 21x26 - 2022
- Dripless shaft seals - 2022
- Bronze rudders - 2022
- Sea Star hydraulic steering - 2022
- Glendinning electronic throttles – 2022
- New thruhulls and strainers – 2022
- Racor filtration – 2022
- Custom trim tab pockets with covers - 2022
- Lenco trim tabs – 2022
- All fuel lines and related componentry added – 2022
- Replaced fresh water tanks and lines - 2022
- Replaced waste tank – 2022
- Replaced fuel lines and supply components - 2022
- Mastervolt battery charger
- Isotherm hot water heater
- Odyssey AGM house banks – 4x
- Odyssey starting banks – 2x
- Replaced ALL wiring, breakers, switches – 2022
- Replaced all bonding wiring – 2022
- Galvanic isolator
Electronics:
- Garmin GPSMAP 8616XSV chartplotter
- Garmin Reactor 40 autopilot with hydraulic smartpump
- Garmin GMR Fantom 54 open array radar
- Garmin GXM satellite weather/radio
- SiriusXM SeaSurface temp
- Garmin 1kW Dual Channel Chirp B275LHW thru hull transducer
- ICOM M506 VHF radio
- Ritchie compass
- Twin Shakespeare Galaxy antennas
- Fusion RA770 Apollo Series Touchscreen AM/FM/Bluetooth Stereo
- (2) JL Audio 6.5 speakers
- Razor Lightbar on Hardtop
Additional Equipment:
- Miya Epoch CX-6 teaser reels recessed in hardtop
- Rupp double spreader outriggers
- Fiberglass rocket launcher available
- All vessel related items to convey
- Owner's Personal Belongings
Engine and generator hours are as of the date of the original listing and are a representation of what the listing broker is told by the owner and/or actual reading of the engine hour meters. The broker cannot guarantee the true hours. It is the responsibility of the purchaser and/or his agent to verify engine hours, warranties implied or otherwise and major overhauls as well as all other representations noted on the listing brochure.
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 |
|---|---|---|
| 5/8/26 | Initial price | $349,000 |
1977 Bertram 31 Flybridge Video Tours
Overview from around the web 1977 Bertram 31 Flybridge
Boat enthusiasts and owners of the 1977 Bertram 31 Flybridge often rave about its classic design and enduring performance
Many commend its robust construction, highlighting the boat's exceptional seakeeping abilities that allow it to handle rough waters with confidence. Customers frequently mention the spacious flybridge, which provides ample seating and a great vantage point for navigating and enjoying the scenery. The interior layout is often praised for its practicality, with a well-appointed cabin that includes a comfortable V-berth, galley, and spacious head, making it ideal for both day trips and overnight adventures. Owners appreciate the excellent fishing capabilities of the Bertram 31, noting its stability and the availability of rod holders and storage space for gear. The boat's proven hull design and reliable twin engine setup are also frequently highlighted, as they deliver a smooth and powerful ride. Overall, the 1977 Bertram 31 Flybridge is celebrated for its timeless appeal, durability, and suitability for both leisure cruising and serious fishing expeditions, making it a beloved choice among many boating aficionados.
The Biggest Pros and Cons
1977 Bertram 31 Flybridge: Pros and Cons
Pros
Legendary Build Quality: The Bertram 31 is renowned for its rugged construction and seaworthiness. Built with solid fiberglass, it handles tough conditions exceptionally well, making it a favorite among avid anglers and cruisers alike.
Classic Design: With its timeless lines and classic styling, the Bertram 31 Flybridge possesses a charm that appeals to both traditionalists and modern boat enthusiasts.
Spacious Interior: The layout offers ample space for both fishing and relaxation. The cabin is well-designed, providing comfortable accommodations for overnight trips.
Fishing Features: Specifically designed with anglers in mind, the Bertram 31 comes equipped with a large cockpit and generous storage for gear, making it ideal for serious fishing excursions.
Stable Performance: The hull shape and design contribute to excellent stability on the water. This makes for a smoother ride, even in choppy conditions.
Strong Community Support: As a classic model, there is a strong community of enthusiasts and resources available for maintenance and upgrades, which can enhance ownership experience.
Cons
Older Technology: Being a model from 1977, some of the onboard technology and systems may be outdated compared to more modern vessels, requiring upgrades for improved performance and comfort.
Maintenance Needs: Older boats, including the Bertram 31, may require more frequent maintenance and repairs, especially if they haven’t been properly cared for over the years.
Fuel Efficiency: The engines, typically installed in the 1977 models, may not be as fuel-efficient as newer options, which can lead to higher operating costs.
Limited Speed: While the Bertram 31 has a reliable performance, it may not match the speed capabilities of more modern designs focused on power and performance.
Space Limitations: While the cabin is spacious for its class, it may not provide the same level of luxury or amenities that larger or more contemporary vessels offer.
Access: Depending on the specific configuration of the boat, accessing certain parts for maintenance can sometimes be challenging, particularly in the engine compartment.
Made For
The 1977 Bertram 31 Flybridge is the ideal choice for avid fishermen, boating enthusiasts, and those who appreciate classic craftsmanship. With its sturdy construction and renowned reliability, this vessel is perfect for serious anglers seeking a dependable platform for deep-sea fishing adventures. Owners who value a blend of performance and tradition will find the Bertram 31 a joy to operate, with its powerful engines and responsive handling. The flybridge offers spectacular views and a great vantage point for spotting fish or simply enjoying the open water. Additionally, its spacious layout makes it suitable for families and friends looking to spend quality time on the water, whether cruising along the coast or docked at a marina. Overall, the 1977 Bertram 31 Flybridge appeals to those who cherish classic designs, prioritize seaworthiness, and desire the freedom of the open sea.
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1977 Bertram 31 Flybridge | |||||
|---|---|---|---|---|---|
| $349,000 | $349,000 | $364,900 | $375,000 | $399,500 | $295,000 |
| Charleston | Charleston | Hilton Head Island | Isle Of Palms | Mount Pleasant | Charleston |
| - | 31' | 48' | 36' | 58' | 35' |
| 3' | - | - | - | - | - |
| Cummins | Cummins | Volvo | Yanmar | 3406 | Cummins |
| 380 hp | 380 hp | 370 hp | 440 hp | 800 hp | 480 hp |
| 5 | 5 | 210 | 103 | 107 | 23 |
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Address
Boat Location
Contact United Yacht Sales about 1977 Bertram 31 Flybridge
24 Patriots Point Road, MT. Pleasant, South Carolina , 29466

























































