This document discusses the shipping cycle, which has four stages: trough, recovery, peak, and collapse. It is driven by fluctuations in supply and demand for shipping services. When prices are low, ship construction decreases until demand increases freight rates, leading to excess supply and lower rates again. The cycle repeats due to the inelastic supply of ships and volatility in demand for transport. The stages involve changes in shipping volumes, freight rates, cash flow, and ship utilization as supply and demand shift relative to each other.