Container cranes used on ships to shore (sts) are often referred to as portainers, rail mounted quay cranes, or container cranes. STS container cranes are gantry-style cranes that load and unload containers from ships and terminals. These cranes use spreaders (a device with a locking mechanism attached to the four corners of the containers) to manage the containers. STS container cranes are classified as high profile or low profile. These profiles illustrate the height at which the cranes…