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Spanish submarine to go undetected longer with world-first propulsion system
According to a report by infodefensa, the Spanish Navy plans to equip two more vessels Isaac Peral (S-81), and Narciso ...
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The war machine that could have tipped the global balance and brought down the US
The first operational war submarine of the Spanish Army was named Isaac Peral, but it was built in Quincy, Massachusetts and with American design. It was launched on July 22, 1916.Heritage Images ...