Along with its sister ship Coronel Bolognesi , Almirante Grau was one of Peru 's two most powerful warships for the first half of the twentieth century .
BAP Almirante Grau was a scout cruiser of the Peruvian Navy , the lead ship of its class .
Along with its sister ship Coronel Bolognesi , scout cruiser   was scout cruiser of Peru 's two most powerful warships for the first half of the twentieth century .
BAP Almirante Grau was a scout cruiser of the Peruvian Navy , the lead ship of its class .