Ship transport is primarily used for the carriage of people and non-perishable goods, generally referred to as cargo.
Although the historic importance of sea travel has lost much importance due to the rise of commercial aviation, it is still very effective for short trips and pleasure cruises. Nonetheless, sea transport remains the largest carrier of freight in the world.
Pallets made their first major appearance during World War II, when the United States military assembled freight on pallets, allowing fast transfer between warehouses, trucks, trains, ships, and aircraft. Because no freight handling was required, fewer personnel were required and loading times were decreased.