One of the ramps at Elizabeth Harbour is broken and can't be fixed until next week at the earliest.
The ramps get vehicles and roll-on roll-off freight off arriving vessels.
The break-down means only one ship can dock at a time, using the only remaining working ramp.
The company which initially built and installed the ramps is sending a team of engineers to the island to make the necessary repairs next week (6 March)
Ports of Jersey say 'minimal disruption' is expected to passenger services.
It's not clear how long the broken ramp will be out of service.

Up to £150 for families to help with school essentials
No more funding from Guernsey for Jersey company that delivers its newspapers
More security for Jersey renters and landlords from today
New plans for £110M Fort Regent revealed
Homelessness in Jersey decreased at the end of last year
Minister shares travel concerns with UK Home Office
Jersey saves almost £45M through external workforce cuts
Bid to expand generation-spanning Jersey dairy farm