In many parts of the world, ships are used to export or import crude oil and refined products. Often the tankers are loaded, or discharge their cargos to Jettys (floating docks that are anchored in navigable water depths) which are connected to shore facilities by pipelines. These Jetty Lines are often fairly short and are not equipped with launch and receive barrels for smart pigs. They also have elbows and internal liners, making their inspection with traditional in-line inspection tools challenging.