A major search is under way tonight after a fishing boat with three crew was reported missing.
Portland Coastguard in Dorset received a call from a fisherman at 5.39pm after the vessel was overdue and could not be contacted.
A Royal Navy warship, lifeboat crew and coastguard helicopter launched a search but were unable to find the missing boat.
A Maritime and Coastguard Agency spokesman said the missing boat has not been seen since leaving the port this morning.
Cindy Rodaway, watch manager at Portland Coastguard, said: "The coastguard helicopter commenced a search from the air of known fishing grounds of this vessel as soon as we were alerted.
"We have also searched all evening utilising the skills of the lifeboat crew and the crews of the Navy warships and the electronic search aids at their disposal."
The search was assisted by HMS York, a type 42 destroyer, the Royal Fleet Auxiliary Wave Ruler, and US Navy supply vessel 2nd Lt John P Bobo.