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Mamba 29
Designer: Jan & Harry Becker  ·  Builder: Bk Marin/Mambaboats  ·  First built: 1980
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About the Mamba 29

Finding detailed information about the Mamba 29 proves challenging, as this sailboat remains relatively obscure in sailing circles with limited documentation available through typical marine industry channels. This scarcity of specifications and builder information suggests the design may have had a restricted production run or represented a smaller manufacturer's offering. Based on the 29-foot length indicated by its designation, this boat would likely fall into the popular mid-size cruising category that emerged during the 1970s and 1980s boom in recreational sailing. Boats of this size typically offered an appealing balance between affordability and capability, making them attractive to weekend sailors and coastal cruisers seeking more room than smaller day-sailers could provide. The Mamba name suggests a design philosophy emphasizing performance characteristics, as manufacturers often chose dynamic names to convey speed and agility. Without comprehensive specifications, potential buyers should approach this model with careful attention to individual boat condition and history. The limited available information makes thorough surveys particularly important when evaluating any Mamba 29, as understanding the boat's construction quality, systems condition, and maintenance history becomes crucial for making an informed purchasing decision.

Core Dimensions
LOA (Length Overall) 28.54 ft / 8.70 m
LWL (Waterline Length) 23.29 ft / 7.10 m
Beam 9.61 ft / 2.93 m
Max Draft 5.25 ft / 1.60 m
Displacement 7,055.00 lb / 3,200 kg
Ballast 3,086.00 lb / 1,400 kg
Sail Area (Reported) 463.00 ft² / 43.01 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Fractional Sloop
Construction FG
Designer Jan & Harry Becker
Builder BK Marin/MambaBoats
First Built 1980
Last Built 1989
Owner Reviews

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Performance Ratios
SA/Displacement Sail Area to Displacement ratio measures how much sail power a boat has relative to its weight. Higher values mean more performance and speed.
Under 14 — Heavy cruiser, slow14–18 — Cruising sailboat18–22 — Cruiser/racerOver 22 — Performance racer
20.2
Comfort Ratio Ted Brewer's Comfort Ratio predicts how comfortable a boat will feel in offshore conditions. Higher values mean a steadier, more comfortable motion in a seaway.
Under 20 — Uncomfortably rough20–30 — Acceptable coastal30–40 — Good offshore comfortOver 40 — Very comfortable offshore
21.53
Capsize Screening Formula The USHS Capsize Screening Formula estimates offshore capsize risk. Lower is safer — values under 2.0 are considered acceptable for offshore sailing.
Under 2.0 — Safe for offshore2.0–2.2 — Borderline offshoreOver 2.2 — Coastal use recommended
2.01
Hull Speed Hull Speed is the theoretical maximum speed of a displacement hull, calculated from waterline length. Most cruising sailboats reach this speed in moderate conditions. 6.47
S# (Speed Number) The Speed Number (S#) is a quick performance index. Higher values indicate a faster, more powerful design relative to its size.
Under 3.0 — Slow cruiser3.0–5.0 — Average cruiser5.0–7.0 — Performance cruiserOver 7.0 — Racer
2.47
Pounds/Inch Immersion Pounds per Inch Immersion (PPI) tells you how much weight is needed to sink the boat one inch. Useful for calculating how additional gear and stores affect waterline. 799.72
Rig Dimensions
I (Foretriangle Height) 37.56
J (Foretriangle Base) 10.83
P (Mainsail Luff) 40.18
E (Mainsail Foot) 12.9
SA Fore 203.39
SA Main 259.16
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