Concept High Productivity STS Cranes

Ships 23 containers abeam, with approximately 20,000 TEU containers, are now in operation and larger ships are in the works. These “ultra large container ships” carry 50% more containers than those in operation just a few years ago. Ship-to-shore container crane production levels need to be increased to meet the needs of the new ships. This paper presents an array of crane concepts and systems that can provide the productivity required to quickly service large ships in, or soon to be in, service. The paper also discusses existing and future systems, unique aspects of the systems, advantages and disadvantages, and expected wharf loads. Systems presented range from traditional cranes that can simultaneously lift multiple containers, to revolutionary cranes on elevated girders with multiple hoist systems that can move containers from the vessel directly into the yard.