"148.0" . . . . "30.0" . . . "''Arktika''-class icebreakers" . . "''Arktika''-class icebreaker" . "Arktika-class icebreaker" . "17.2" . . . "''Arktika''" . "''Arktika''-class nuclear-powered icebreakers" . . . "new nuclear-powered icebreakers" . "''Arktika''-class nuclear icebreakers" . "Arktika class" . . . "''Arktika''-class" . "''Arktika'' class" . . "Arktika-class icebreaker" . . . . . "38.1512" . "preceding class of nuclear-powered icebreakers" .