Surface Drive QSPD: a propulsion configuration designed for performance
The QSPD (Q-Marine Surface Piercing Drive) system, integrated into the MAKAI M37 Sport, is based on the principle of a semi-submerged propeller. Installed just aft of the rear skirts, the propeller moves half in the water, half in the air. This configuration significantly reduces hydrodynamic drag.
This type of propulsion, often associated with high-speed units, offers advantages in terms of propulsive efficiency at high speeds. The water encountered is less disturbed, and the propeller works in a cleaner flow. The MAKAI M37, in its Sport version, can reach speeds of around 35 knots, powered by two 370 hp Yanmar V8 diesel engines.
Less drag, more efficiency: gains in fuel consumption
The reduced drag offered by surface propellers translates directly into lower fuel consumption at fast cruising speeds. According to the manufacturer, this configuration optimizes performance without compromising range: a decisive criterion for yachtsmen planning long coastal crossings or Mediterranean itineraries.
The MAKAI M37 carries 900 liters of fuel, a substantial volume for an eleven-meter catamaran, which, combined with efficient propulsion, gives it great autonomy. When it comes to fast sailing, overall efficiency is a key factor.
Simplified maintenance and robustness: the QSPD challenge
Unlike Z-Drive systems, QSPDs shelter all critical components inside the hull. The result is minimal exposure to spray and corrosion, and simplified maintenance.
The system has few moving parts compared with conventional bases. This mechanical minimalism is inherited from initial use in a military environment, guaranteeing high robustness. For owners, this means reduced maintenance, greater long-term reliability, and lower operating costs.
Adapting to shallow drafts: an asset for shallow water bodies
With a 55 cm immersion limit, the MAKAI M37 Sport benefits from a shallow draft, a major advantage when exploring shallow coastal areas or accessing isolated anchorages. The QSPDs are positioned high and aft, contributing to this characteristic.
These details will be of particular interest to sailors in regions such as the Croatian coastline âeuros where the âeuros boat is presented, the Italian lagoons or the Atlantic rias.
An alliance between hull and propulsion: design balance
The M37's configuration is based on a low-drag hull, designed from the outset for fast propulsion. The tunnel profile efficiently channels water flow to the propellers, maximizing thrust and reducing turbulence.
The QSPD system is part of this philosophy: lightweight appendages, architecture optimized for high speeds, and synergy with the flowing lines designed by Italian studio ERYD Design. This translates into a global approach in which propulsion is not an add-on, but an integrated component right from the start of the project.
