A crane barge which broke loose of its moorings and partially filled with water has been secured.
The vessel drifted across the River Hull on Friday morning before getting stuck in mud between Drypool Bridge and Myton Bridge.
The harbourmaster and coastguard were alerted and the barge's owner arranged for a tugboat to assist, Hull City Council said.
A spokesperson for the authority added: "There are no signs of oil pollution. However, as a precautionary measure, booms are being placed around the vessel."
The weight of the water had caused the barge to rest on the riverbed.
The spokesperson said: "With the situation stabilised, we are now formulating a plan to move the barge as soon as possible.
"In the meantime, we will ensure that it remains secure, posing no danger to life or the environment."
According to the Maritime and Coastguard Agency, teams from Humber Rescue and Cleethorpes Coastguard responded to a call at about 04:45 BST.
There were no reports of anyone missing or injured, the agency said.
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