Ekranoplan is a general naming of such machines.
And all these things are from the Soviet past, so the subject name is not correct.
When Khruschov was at power he has supported designer R. Alekseev - the champion of hydrofoils and ekranoplans.
As soon as Brezhnev has taken over the power, the ekranoplans' era in the USSR was over...
http://www.globalaircraft.org/planes/lun_ekranoplan.pl
this is a link with more pictures