Under what specific circumstances would a crawler crane be preferred over an all-terrain crane, and why?

A crawler crane would be preferred over an all-terrain crane when operating on soft or uneven terrain, or when requiring frequent movement with a load. Crawler cranes utilize tracks instead of wheels, providing superior ground bearing pressure distribution and stability on challenging surfaces. This means they can operate safely on ground conditions where an all-terrain crane, which uses rubber tires, would sink or become unstable. Furthermore, crawler cranes can travel with a suspended load, albeit at reduced speeds and within specified load limits, whereas all-terrain cranes typically need to set down the load before moving. This capability is particularly advantageous in construction sites where frequent short-distance moves are necessary. An example would be a construction site with muddy or uncompacted soil, where a crawler crane can move heavy precast concrete sections into place without needing additional ground stabilization measures that would be necessary for an all-terrain crane.