Mikhail Romanov

as Charles Smith

as Writer

as Professor Sotin

as Pavel Fyodorovich Protasov

as Mikhail Kotsyubinsky

as Langfeld

as Alexey Antonov

as Erich von Rummelsburg

as Midshipman Berezhenko

as Karl Ivanovich Berg, starshiy ofitser, baron

as Captain of "The Leopard"

as John Mangles