Russia’s Severnaya Verf shipyard in St. Petersburg has signed a contract on the overhaul of two warships for the Algerian navy, the company’s press service said on Thursday. The Russian shipbuilder will modernize a Nanuchka II class corvette and a Koni II class frigate, which have been in service with the Algerian navy since the 1980s. “The contract has been signed in the framework of an agreement between [Russian state-run arms exporter] Rosoboronexport and the Algerian Defense Ministry,” the company said in a statement.