Somali pirates hijacked 10 ships in March, the most since December, 2010, and may attack larger merchant vessels this month, AKE Intelligence said, Bloomberg reported. Four of the seized craft were used to make more attacks, rather than being held for ransom, said Rory Lamrock, a piracy analyst at the Hereford, England-based security and risk-assessment company. “Pirate syndicates will be emboldened by the latest hijackings, spurring them on to conduct more attacks over the coming weeks,” Lamrock said. Somali pirate attacks rose to a record 237 in 2011 with ransoms worth $160 million paid to release 31 hijacked vessels, a One Earth Future Foundation report showed. Pirates based in Somalia cost governments and the shipping industry as much as $6.9 billion last year, One Earth estimates.