These cranes typically have the highest capacities over the front.

• A. All-terrain cranes
• B. Crawler cranes
• C. Rough terrain cranes
• D. Tower cranes

Answer: (C)

The main idea is stability: the lifting capacity at any position is limited by the tipping moment about the crane’s supports. When the load is over the front, the overturning moment increases in that direction, so the crane needs a very solid forward base to resist it. Rough terrain cranes use four outriggers that form a broad, rigid base and are specifically configured to maximize forward stability. That setup typically yields the highest frontward capacity among common mobile cranes, because the load’s forward moment is countered effectively by the wide front support and ballast. Other crane types either rely on different base configurations or aren’t optimized for front-forward lifts, so their front capacities are generally lower in comparison.