HM Coastguard is appealing for information from the public after taking a call from a vessel, believed to be called Imogen, which is said to be taking on water around 13.5 miles south east of Flamborough.
A statement from HM Coastguard said: "An extensive search is being carried out involving a coastguard search and rescue helicopter from Humberside, two RNLI lifeboats from Bridlington, an independent lifeboat from Hornsea Rescue, Coastguard rescue teams from Bridlington and Hornsea and several nearby commercial vessels.
"If you have any information about the vessel, please contact Humber Coastguard Operations Centre urgently on 01262 672317."
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