Design and Construction
The 32.48-foot hull is built in carbon fibre by an Italian yard known for performance monohulls. The MD 33 has a 30.51-foot waterline, a fin keel with bulb, and a spade rudder.
Displacement is 4,600 pounds, including 1,600 pounds of lead ballast. The resulting 33 percent ballast ratio places her above only 15 percent of comparable designs—a low figure that suits the type. Her displacement-length ratio of 82 puts her firmly among “ultra light racers,” with 97 percent of similar sailboat designs being heavier.
A beam of 10.5 feet gives a length-to-beam ratio of 3.08. By that measure, she is roomier than 62 percent of similar designs. Her Motion Comfort Ratio, however, falls between 9.9 and 12.5 and is more comfortable than just 4 percent of her peers—a blunt indication of ride quality in a seaway.
Rig and Sail Plan
The MD 33 has a fractional rig, with 470.7 square feet of sail area between the mainsail and jib. Her sail area-to-displacement figures help explain her reputation: 23.2 using the ISO 8666 reference sail and 26.3 with a 135 percent genoa. The data rates her faster than 99 percent of similar designs in light wind.
She is also significantly overrigged, carrying more rig than 100 percent of similar sailboats. The running rigging follows a logical modern inventory:
- Mainsail, jib/genoa, and spinnaker halyards: about 29.5 meters long and 10 mm in diameter
- Jib and genoa sheets: 9.9 meters by 12 mm
- Mainsheet: 24.7 meters by 12 mm
- Spinnaker sheets: 21.7 meters by 12 mm
- Cunningham, kicking strap, and clew outhaul: around 4.8 to 9.7 meters by 10 mm
Performance Envelope
The theoretical hull speed is 7.4 knots. Her wetted surface is about 387 square feet, modest for her length and consistent with the low-displacement-length approach.
An immersion rate of about 1,120 pounds per inch points to a shallow-bodied hull that responds quickly to changes in crew position and load. The trade-off appears in the comfort figures: this is a light racing boat rather than a platform designed for an easy motion at sea.
The capsize screening value is 2.34. Under the reference standard, that means she would not be accepted to participate in ocean races.
Accommodations
Documentation of the interior is limited. The only available indicators are the length-to-beam ratio and comparative spaciousness figure. The MD 33 is beamier relative to length than 62 percent of similar designs, which the data uses as a proxy for interior volume rather than as a measured berth count or description of the layout.
Known Issues
The boat’s ineligibility for ocean racing is a regulatory classification tied to the 2.34 capsize screening value, not a documented failure mode.
Verdict
The Maxi Dolphin 33 is a focused, carbon-fibre ultra-light racer. She is significantly overrigged and startlingly quick in light air, but her comfort ratio sits near the bottom of the comparable field, while her capsize screening value bars her from offshore racing fleets. She suits a sailor who values acceleration and rating over an easy motion at sea.
Pros
- Carbon-fibre hull from a dedicated Italian performance yard
- SA/D of 26.3 with a genoa; faster than 99 percent of peers in light wind
- Significantly overrigged fractional platform
- Roomy for her length relative to 62 percent of similar designs
Cons
- Capsize screening value of 2.34 excludes her from ocean races
- Motion Comfort Ratio better than only 4 percent of similar designs
- Ultra-light displacement-length ratio of 82 means minimal load-carrying comfort
