The Baltic Exchange's main sea freight index rose to its highest in a year on Monday, helped by higher rates for capesize vessels.The overall index, which factors in rates for capesize, panamax and supramax shipping vessels, climbed 3.2% to 1,991.The capesize index added 176 points, gaining 5.3% to 3,485 - its highest level since May 25, 2022.