Guam Port Cranes Knocked Out by Extreme Wind Gusts

Crane Runaway Shuts Down Container Operations in Guam

According to a report by Maritime Executive, the Port Authority of Guam is working to restore all three of its ship-to-shore (STS) gantry cranes after a severe wind event sent them rolling uncontrolled along the quayside rail system. The incident occurred at roughly 2130 hours on a Friday night, when onboard wind gauges on the cranes recorded gusts of 100 mph — twice the 50 mph gusts that had been forecast for the island.

Gantry Crane 6 reportedly broke free from its secured position and traveled about 1,000 feet down the rail line before striking Gantry Cranes 5 and 4, pushing them hundreds of feet further along the dock. Crane 6 derailed entirely, Crane 5 lost a single wheel off the rail, and Crane 4 stayed on the track, leaving it in the best condition for a fast return to service.

Recovery Efforts Hampered by Weather

Port technical staff tried to begin inspections the following day but had to postpone the work because winds remained too strong for safe access to the equipment. Operations resumed on Sunday, when crews made progress by using heavy machinery to separate Crane 5 from Crane 4, clearing room to start repair work on the least-damaged unit.

Port leadership, quoted in the original report, said the immediate goal was to evaluate the condition of each crane and map out what would be needed to bring them back online, with mechanics, operations staff, and management mobilized to prioritize restoring whatever equipment could be salvaged quickly while still supporting upcoming vessel calls.

Despite the disruption, the port has not had to revise its cargo schedule so far, largely because the next two ships due to call are ro/ro vessels that can discharge without relying on the gantry cranes.

Aging Equipment Already Due for Replacement

The three cranes involved — all manufactured by Hitachi — date back to the 1980s and were already marked for retirement. The Port Authority of Guam had secured a $60 million federal Port Infrastructure Development Program grant, to be paired with $15 million in the port’s own funds, to purchase three newly built STS cranes. Once the replacements arrive, the existing units will be decommissioned. Two additional, older cranes on the waterfront are already out of service and awaiting demolition.```

Guam’s port plays a strategic logistics role beyond commercial trade: the authority notes that roughly 30 percent of cargo moving through the facility supports U.S. military operations, given the island’s position as a major Navy and Air Force outpost.

What This Means for Owners and Operators

This incident is a pointed reminder that shore-side infrastructure failures can disrupt vessel schedules just as readily as mechanical issues aboard ship. Operators calling at ports with aging crane fleets should factor in the real possibility of extended discharge delays or diversions to ro/ro or breakbulk handling if STS equipment goes down unexpectedly. For technical superintendents and charterers, the episode underscores the value of verifying terminal equipment condition and contingency plans before fixing vessels to ports where quay infrastructure is known to be due for replacement. It also illustrates why independent condition surveys and pre-call due diligence — not just on the ship but on the terminal handling it — remain relevant risk-management tools, particularly in regions exposed to severe weather where wind-securing procedures for cranes can be tested to their limits. Ports relying on decades-old gantry equipment, as Guam was prior to this event, may want to accelerate inspection regimes for crane rail-locking and wind-restraint systems ahead of storm season, rather than waiting for replacement units to arrive.