А-300-538 is a project by Russian aviation company, JSC

Alekseyev Central Hydrofoil Design Bureau Alekseyev Central Hydrofoil Design Bureau (russian: Конструкторское бюро Алексеева) is a company based in Nizhniy Novgorod, Russia. It was named after Rostislav Alexeyev. This design bureau has been designing hydrofoil ...

, for a double decker

ekranoplan A ground-effect vehicle (GEV), also called a wing-in-ground-effect (WIG), ground-effect craft, wingship, flarecraft or ekranoplan (russian: экранопла́н – "screenglider"), is a vehicle that is able to move over the surface by gainin ...

with a maximum takeoff weight of 350 metric tons and a payload of 64 metric tons or 550 passengers over 3000 km.

References

Ekranoplans Proposed aircraft of Russia {{aero-stub