This document discusses the shipping cycle, which is an economic concept that explains how shipping companies and freight charges respond to fluctuations in supply and demand in the shipping industry. The shipping cycle has four main stages: trough, recovery, peak, and collapse. In the trough stage, supply exceeds demand, freight rates are low, and ships accumulate unused in ports. As demand increases in the recovery stage, freight rates begin to rise. Rates peak when supply and demand balance out. The cycle then collapses as supply outpaces demand again, causing freight rates and ship utilization to decline once more.