The Walton Coastguard Rescue Team, the Harwich RNLI lifeboat, the harbour launch boat, the search and rescue helicopter from RAF Wattisham were sent to the scene, along with a number of other nearby vessels and tugs that went to assist.
At 2.45pm the ferry was brought alongside at Harwich International Port and all of the passengers on board disembarked.
The ferry Sirena Seaways, with 489 passengers on board, hit the quay at Parkeston near Harwich in Essex just after midday, but the water it was taking on was "quickly stopped" and it arrived safely at nearby Harwich International Port at 2.45pm.
There are no reported injuries and no reported pollution.
Thames Coastguard was contacted just after midday with reports that Sirena Seaways had been damaged.
Paramedics and an air ambulance reacting to reports of a person locked in a car and not breathing at Harwich in Essex discovered it was a just dummy when they arrived at the scene.
East of England Ambulance Service (EEAST) crews were alerted at 7.40am to Milton Road in Harwich to a person believed to be unconscious in a car.
“Following assessments at the scene, it appears the person in the car was actually a mannequin. This is a very unusual incident our crews attended this morning and the person who dialled 999 did the right thing as they could not gain access to the car and thought the person was not breathing."
– Gary Sanderson, East of England Ambulance Service
Mr Sanderson added the mannequin had been found in "bizarre" circumstances.
It was sitting upright in the rear seat, fully dressed and with a blanket wrapped around it.