Mamba 33 Buyer's Guide
The Mamba 33 is a Bengt Karlsson-designed, Mamba Boat AB-built Swedish fractional sloop produced from 1985 to 1991. For a buyer scanning the used market, she presents as a beamy 32-footer with a lead fin keel, a modest Yanmar diesel, and a teak interior — a coastal cruiser-racer rather than a long-range voyager.
Layouts on the Used Market
The design centers on a teak interior within a hull whose 10-foot-9-inch beam and 3.01 length-to-beam ratio make it roomier than two-thirds of comparable sailboats, with 26 gallons of water and 10 gallons of diesel supporting weekend and coastal use. The 27-foot-3-inch waterline and solid fiberglass hull give her the volume of a larger boat below, while the lead fin keel keeps her upright and manageable in a breeze.
Equipment and Common Upgrades
The 18-horsepower Yanmar with shaft drive defines the auxiliary, and the fractional rig with 135 percent genoa option — lifting sail-area-to-displacement from 16.9 to 19.6 — is the obvious sail-handling upgrade path. A sandwich deck and solid fiberglass hull mean canvas and deck-hardware sealing matter more than structural reinforcement. Buyers should confirm the mainsail and genoa halyards run 104.7 feet at 3/8 inch and the mainsheet is 80.8 feet, since worn running rigging is a common early expense.
What to Inspect
The Mamba 33's sandwich deck is the one construction detail to probe on any individual hull. The deck sandwich construction used for cabin comfort is the conventional location for moisture intrusion as these boats age, so tap and sound the deck for soft spots and check around fittings for staining or delamination. Beyond that, confirm the lead fin keel's bonding and the 5.6-to-5.9-foot draft under load, and verify the Yanmar starts cleanly on the 10-gallon tank. The capsize screening value of 2.01 and modest comfort ratio argue against judging her as an offshore boat regardless of condition.
Availability and Buyer's Takeaway
- Sound the sandwich deck for core moisture
- Check keel bonding and draft under load
- Verify Yanmar start and fuel system
- Confirm rig dimensions match fractional sloop spec