Machinery Trolley Cranes

by Arun Bhimani and Simo Hoite

The size of container cranes continues to increase to meet the demand of the larger ships. This trend has changed the governing conditions for container crane design. New conditions make a strong case for selecting machineryon-trolley post-Panamax cranes. This paper compares the MOT (machinery-on-trolley) with the RTT (rope towed trolley) system.