It said the 500-passenger Commodore Clipper (built 1999) suffered a "technical incident".
The ship was due to head to Portsmouth but clipped the bottom off Guernsey.
It sailed to St Peter Port for checks.
UK ferry company Condor has suspended one of its ferry services after a vessel touched the seabed.
It said the 500-passenger Commodore Clipper (built 1999) suffered a "technical incident".
The ship was due to head to Portsmouth but clipped the bottom off Guernsey.
It sailed to St Peter Port for checks.