Bertram 31 Flybridge Cruiser
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XPresented For Sale By:
Bay Marine - Ohio
United States
| Make | Bertram |
|---|---|
| Model | 31 Flybridge Cruiser |
| Year | 1973 |
| Condition | Used |
| Price | US$117,900 |
| Type | Power |
| Class | Sports Fishing |
| Length | 9.45 m |
| Fuel Type | Diesel |
| Hull Material | Fibreglass |
| Location | Portsmouth, New Hampshire, United States |
| LOA | 9.45 m |
|---|---|
| Beam | 3.4 m |
| Min. Draft | 0.91 m |
| Dry Weight | 11000 lb |
| Engine Type | Inboard |
|---|---|
| Engine Make | Yanmar |
| Engine Model | 6LPA-STP |
| Fuel Type | Diesel |
| Engine Year | 2004 |
| Power | 315 hp |
| Drive Type | Direct Drive |
| Engine usage (hours) | 1500 |
| Engine Type | Inboard |
|---|---|
| Engine Make | Yanmar |
| Engine Model | 6LPA-STP |
| Fuel Type | Diesel |
| Engine Year | 2004 |
| Power | 315 hp |
| Drive Type | Direct Drive |
| Engine usage (hours) | 1500 |
| Designer | Ray Hunt |
|---|---|
| Builder | Bertram |
| Hull Shape | Deep Vee |
Description
1973 Bertram 31 Sportfish Cruiser – Happy Mama
Location: Portsmouth, NH
Type: Flybridge Sportfish
Hull Material: Solid Fiberglass
Fuel Type: Diesel
Engines: Twin Yanmar 6LPA-STP 315hp
Engine Hours: ~1,500
Repowered in 2004 with twin 315hp Yanmar 6LPA-STP diesels, Happy Mama is a clean and mechanically updated example of the legendary Bertram 31.
This is a fantastic cruising platform or serious offshore fishing vessel. Designed by C. Raymond Hunt, the Bertram 31’s solid fiberglass deep-V hull and contemporary lines were far ahead of their time and remain highly respected today.
Major engine interval service was completed in 2023, making her turnkey and ready for her next owner.
She retains her original interior and gelcoat, preserving the classic Bertram character, while numerous upgrades ensure reliable performance.
PERFORMANCECruise: 24–26 knots @ 3,000–3,200 RPM
Approx. 18 GPH at cruise
Top Speed: ~30 knots WOT
Legendary rough-water capability and dry ride
Brand new 1½” propeller shafts
New cutlass bearings
Line cutters installed on shafts
Major Yanmar interval service:
Aftercoolers removed, cleaned, painted & reinstalled
Heat exchangers serviced
Oil, fuel & transmission coolers serviced
All new hoses and clamps
New PSS dripless shaft seals
(4) reinforced swivel rod holders
Livewell pump added
Fusion stereo system (2022)
Reconditioned props (2021)
New rudder bearings (2021)
EZ2CY bridge enclosure (2020)
Garmin 18xHD Radar (2018)
Garmin 7610sv MFD (2017)
New batteries (2018)
Custom SEAmless hardtop (2017)
Forward V-berth
Convertible dinette
Galley with sink and refrigeration
Enclosed head
Classic Bertram teak trim
Few production hulls have earned the reputation of the Bertram 31. Offshore proven, heavily built, and timeless in profile, it remains one of the most sought-after classic sportfishing platforms ever produced.
Happy Mama is a well-maintained example offering updated diesel power, strong service history, and the ride that made the 31 famous.
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.
Presented For Sale By:
Bay Marine - Ohio
United States
Presented For Sale By:
Bay Marine - Ohio
United States
