Unlike their predecessors , the Uragans were built without deck armor to save weight .
Edinorog was modified for the addition of 0.5 - inch ( 12.7 mm ) armor plates after completion , but it is unknown if Uragans were ever fitted .
Unlike their predecessors , the Uragans were built without deck armor to save weight , but Edinorog was modified for the addition of 0.5 - inch ( 12.7 mm ) armor plates after completion , but it is unknown if they were ever fitted .