Workers in a row boat pick up the rope of a cargo ship which was guided through the Culebra Cut towards the Pedro Miguel locks, in the Panama Canal in Panama City

Workers in a row boat pick up the rope of a cargo ship which was guided through the Culebra Cut towards the Pedro Miguel locks, in the Panama Canal in Panama City

Workers in a row boat pick up the rope of a cargo ship which was guided through the Culebra Cut towards the Pedro Miguel locks, in the Panama Canal in Panama City August 13, 2014. Panama will celebrate the 100th anniversary of the Panama Canal on August 15, 2014. REUTERS/Rafael Ibarra (PANAMA – Tags: BUSINESS POLITICS TRANSPORT MARITIME ANNIVERSARY)