This document provides an overview of liner shipping. It defines liner shipping as the transport of goods by large ocean-going vessels that follow regular routes and schedules. Approximately 400 liner services currently operate worldwide. The largest shipping companies, like Maersk and MSC, have fleets of over 2 million TEU. Liner shipping plays an important role in global trade by lowering costs, increasing availability of goods, and fueling economic growth through transportation of large loads. However, it also contributes to environmental costs and delays in transport time. The document outlines the types of liner routes and provides examples of how liner shipping impacts everyday life.