MAMBA 341
Specifications
Hull
| LOA | 33.33 ft |
| LWL | 27.79 ft |
| Beam | 11.25 ft |
| Draft | 5.91 ft |
| Displacement | 10,803 lb |
| Ballast | 3,399.7 lb |
| Hull speed1.34·√LWL | 7.1 kn |
About the MAMBA 341
Based on earlier MAMBA 34 but with more freeboard among other differences. Masthead or fractional rig.
The Mamba 341 is a compact, heavy-displacement cruiser designed by Rolf Magnusson and built by Mamba Boats / BK Marin in 1981. With a displacement of 10803.0 lb and a ballast ratio indicating significant weight low in the hull, this vessel prioritizes stability and seakeeping over speed.
- Best for:
- This boat suits coastal cruisers and those seeking a stable, comfortable ride in rough weather, particularly owners who value a low capsize ratio of 2.04 for safety. Its dimensions and ratios make it well-suited for single-handers or couples looking for a manageable yet robust package for protected waters.
- Bluewater capability:
- With a displacement of 10803.0 lb, a capsize ratio of 2.04, and a comfort ratio of 22.57, the Mamba 341 demonstrates strong offshore suitability for its size, offering excellent stability and motion comfort in heavy seas.
- Comparables:
- Comparable boats include other Rolf Magnusson designs from the early 1980s, such as the Mamba 30 or similar Scandinavian-built cruisers like the Hallberg-Rassy 34, which share similar heavy-displacement characteristics and conservative sail plans. These vessels are comparable due to their shared emphasis on safety, comfort, and traditional cruising capabilities.
Performance
ORC Performance Data(1 certificate)
Measured performance data from ORC (Offshore Racing Congress) certificates.
Polar Diagram
Boat speed (kn) vs. true wind angle. Source: ORC
Racing Ratings
Triple Number
ORC Measured
Sail Areas (ORC)
Speed Table (kn)
| TWA \ TWS | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 20 | 24 |
|---|---|---|---|---|---|---|---|---|---|
| 52° | 3.3 | 4.5 | 5.4 | 6.0 | 6.3 | 6.5 | 6.6 | 6.7 | 6.6 |
| 60° | 3.5 | 4.7 | 5.6 | 6.2 | 6.5 | 6.7 | 6.8 | 6.8 | 6.8 |
| 75° | 3.9 | 5.2 | 6.0 | 6.5 | 6.7 | 6.8 | 7.0 | 7.1 | 7.2 |
| 90° | 4.0 | 5.3 | 6.2 | 6.7 | 6.9 | 7.1 | 7.3 | 7.4 | 7.5 |
| 110° | 3.9 | 5.3 | 6.3 | 6.8 | 7.1 | 7.4 | 7.6 | 7.9 | 8.3 |
| 120° | 3.8 | 5.2 | 6.2 | 6.7 | 7.1 | 7.4 | 7.7 | 8.3 | 8.7 |
| 135° | 3.3 | 4.6 | 5.7 | 6.5 | 6.9 | 7.2 | 7.6 | 8.3 | 9.2 |
| 150° | 2.8 | 3.9 | 5.0 | 5.8 | 6.4 | 6.8 | 7.1 | 7.6 | 8.3 |
| Beat VMG | 2.1 | 3.0 | 3.6 | 4.1 | 4.4 | 4.6 | 4.7 | 4.7 | 4.7 |
| Run VMG | 2.4 | 3.4 | 4.3 | 5.0 | 5.6 | 6.0 | 6.3 | 6.8 | 7.3 |
Estimated Value
Limited DataEstimated Cost of Ownership
Based on 33.33ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
We don't have enough data on the MAMBA 341yet to publish model-specific findings we'd stand behind — but here's a free general inspection checklist, built from our research into what actually goes wrong on boats of this kind.
Drawn from 7,029 documented issues across 2,391 models, ordered so the areas that most often turn up problems come first.
Own a MAMBA 341? Reports from owners are what turn this into a model-specific checklist — and they're the reason the boats above it have one.
Similar Sailboats
Which engine powers your MAMBA 341?
We haven't confirmed the engine for this model yet. If you own or know one, tell us — as owners report in, we build an accurate picture over time.
Already know your engine? Search all engines → to find its exact parts.
Used sails that fit the MAMBA 341
Checking eBay for sails sized to this boat's rig…