The Coastguard says it was alerted to reports that a woman wearing a life jacket was missing at sea at 1.30pm this afternoon.
The disappearance followed a collision between a yacht and a dredger, with one other person pulled from the water by a rescue boat before raising the alarm.
More top news
The last four acts standing vied for a place in the final three in a festive-themed X Factor semi-final.
David Gray, Steve Harley and KT Tunstall are just some of the big names associated with the new single, released in December.
Tonight it'll become quite clear with a patchy frost in places. The breeze will keep much of the fog at bay.