Fire, several police and an ambulance have all been called to rescue a man stuck in the water on the Albert Dock.
It happened around 4 o'clock this afternoon.
Eye witnesses say he'd come from a nearby pub - but its unclear whether he jumped or fell in to he water.
He was eventually pulled to safety by a boat - not a police boat - one belonging to a nearby ship.
The man's been treated for hypothermia.
More from Local