The first four new gates for the Panama Canal’s third set of locks are seen on top of a cargo ship during their arrival to Colon in Colon City

The first four new gates for the Panama Canal’s third set of locks are seen on top of a cargo ship during their arrival to Colon in Colon City August 20, 2013 . The third set of locks has a total of 16 rolling gates, eight for each new lock complex. The new gates weigh an average of 3,100 tons each. They were constructed in Italy. According to Panama Canal authorities the 12 gates remaining are scheduled to arrive before the end of 2014. The expansion project will allow bigger ships to transit, with two new sets of locks, one on the Pacific side and one on the Atlantic side REUTERS/ Carlos Jasso (PANAMA – Tags: BUSINESS CONSTRUCTION MARITIME)