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Technology : S-QUALO

We are happy to introduce you to YAMAHA Technologies that have been created based on our extensive track record and experience.


The right/left split mold based on the Y.I.B. (Yamaha Integrated Body) concept created new technology called A.R.B., which reduced weight while enabling designers to give the hull a unique sculptured look.
The character lines engraved in the hull help make the shape stiffer and ensure greater durability.
While their effects are defined to the fullest, the lines on the surface have been carefully positioned to make the proportions look beautiful, enhancing the completeness of the design.

01"A.R.B." delivers outstanding stability

Unique A.R.B.(Anti-Rolling Blade) with downward angled chine and blade positioned on the hull. The simulation technologies of Yamaha's unique boat development system – YAMAHA Performance Development System (Y.P.D.S.) – and associated tuning engineering techniques have been fully utilized to achieve a high-level of boat stability. Thanks to highly refined production techniques that enable changes to be made down to millimeter level, the S-QUALO boasts not only static stability during mooring maneuvers, but also lateral stability on rough seas and drive stability when cruising.

02The Square Bow Also Improves Overall Boat Functionality.

The square bow, which has been highlighted as a new advanced design, gives the exterior of this boat an unprecedented overwhelming appearance. The substantially expanded deck area at the bow allows crew to use ropes and other equipment with ease. In addition, the bow flare, which has also been expanded, effectively rolls back waves impacting the bow away from the boat. Furthermore, the bow flare makes the bow berth inside the cabin look spacious.

03"Stringer Structure" Generates Significant Weight Savings

Using YAMAHA's 3D design/mold processing technology and structural analysis technology, we developed the "stringer structure" to maintain strength and reduce weight at the same time. Unlike the conventional method called a bulkhead structure that is primarily composed of crosswise frames, the new technology makes the hull, made of FRP, leaner by integrating what are called longitudinal stringers into its base framework, and by taking maximum advantage of layout due to the degree of freedom involved in designing the shape. At the same time, by making some stringers function as the interior floor, we reduced weight by 10 to 12% compared to conventional construction methods. Reducing weight naturally improves acceleration and fuel efficiency. It also reduces VOC (volatile organic compound) emissions as it can considerably reduce the scale of component bonding processes required. In addition, it helps the environment by reducing the usage of wood.

04VARTM Contributes to Reducing Usage of Volatile Organic Compounds

VARTM (Vacuum Assisted Resin Transfer Molding), a forming method that places fiberglass in a closed mold system and uses negative pressure to inject resin, reduces usage of environmental toxins (VOC: volatile organic compound) to approximately 10% of the level of conventional methods. It also helps improve the working environment as workers do not have direct contact with resin. On the S-QUALO, VARTM is used for the hardtop and toilet wall.

05Eco-friendly Low Styrene Gelcoat is Used

The gelcoat used for finishing the FRP surface is eco-friendly. Ninety percent of the total amount of gelcoat used for a YAMAHA S-QUALO is low styrene gelcoat containing 10% less styrene.

06The most advanced engine is also the lightest in its class * and eco-friendly

The boat is powered by a cutting edge 4-stroke engine F300B that combines high power and compact size. In addition to introducing a sleeveless cylinder in the outboard motor – a world first – we used lightweight resin material for the bottom cowling. Thanks to exhaustive efforts to design a compact and lightweight engine, we succeeded in making the lightest engine in its class. Key engine features include environmental friendliness thanks to higher fuel economy, and exceptional speed.

* Research conducted by YAMAHA (as of April 2010), comparison with a 4-stroke outboard engine with 225 to 250 horsepower.

Sophisticated control facilitated by digital network system

The engine boasts a computerized throttle and shift supported by a digital network system.
This system eliminates cable friction drag and lightens lever operation load by using digital communication techniques (sensors, ECM, actuator), which makes it easier to correct driving operations.

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