Their official category is the FSR-O, where "O" comes from the name of the hull "OFFSHORE" that these boats have to evolve.

They consist of two lateral boots that ensure stability but provide considerable speed when gliding and are absolutely similar to the HYDRO.

They then also the same engine and the same materials of construction.

In reality these boats are used in competitions deep sea where the weight of 3-5 tons and 2 – 4 engines 250 HP each make them fly and jump on the waves, sometimes very large, absurd speeds.

It is therefore a template category expanding so much so that in the gatherings are seen more and more examples of this type.

These models can also have remarkable dimensions which vary from 1 a 2.5 me their operator can be electric or combustion.