. . "Scheme of Whale class submarine"@en . . . . . . . "--02-05"^^ . . . . . . . "The S-99 () experimental submarine was the only ship of Whale class (known locally in the Soviet Union as Project 617) that the Soviet Union built during the early cold war period and the only soviet submarine which had a Walter engine fuelled by high test peroxide (HTP)."@en . . "The S-99 () experimental submarine was the only ship of Whale class (known locally in the Soviet Union as Project 617) that the Soviet Union built during the early cold war period and the only soviet submarine which had a Walter engine fuelled by high test peroxide (HTP)."@en . . . . "Soviet submarine S-99"@en . "300"^^ .