An investigation has been launched after 31 people were rescued or had to swim to safety when an amphibious tour bus sank in Liverpool.
Twenty seven people were taken to hospital because of shock and exposure after the Yellow Duckmarine vessel went under in Liverpool's Albert Dock.
A spokesman for Merseyside Police said everyone had been accounted for and a full investigation was under way.
A spokesperson said: "A police cordon remains in place at the scene and a multi-agency investigation into the full circumstances of the incident is ongoing".
A spokesman for Yellow Duckmarine added: "The craft has now been recovered and following consultation with MCA [Maritime and Coastguard Agency] it has been taken to a place of safe and secure storage in order that a full investigation can take place. That will continue tomorrow morning.
"We would also like to express our thanks to the emergency services and the Albert Dock security team onsite for their immediate and exemplary response".
A rescue operation - involving police, ambulance, coastguard and the RAF - was mounted by the emergency services and 31 people were helped out of the water.
Of those, 17 people were taken to the Royal Liverpool Hospital for treatment, mostly for shock, but all were well enough to be discharged.
Nobody was trapped inside the vessel, the fire service said.
The incident marks the second time in three months that one of the yellow vehicles has sunk.
It is understood that 28 people were led to safety from the bus, including a baby whose mother held her above the water on the roof of the sinking craft.
Three more were saved from the water by firefighters.
Eyewitnesses reported seeing a large number of people swimming in the River Mersey as the vessel, one of four in the company's fleet, sank in Salthouse Dock, part of the Albert Dock complex.
People could be seen throwing life-rings into the water to help those trying to escape.
In March, the entire fleet was ordered out of the water after a bus, which was not carrying passengers, sank.
Then, in May, the Queen and Prince Philip had a ride on one of the yellow Duckmarine buses when they visited the region as part of her Diamond Jubilee tour to celebrate 60 years on the throne.
Writing on Twitter, the Mayor of Liverpool Joe Anderson refused to be drawn on the future of the vessels until he knew everybody involved in the latest incident was safe:
Albert Dock Duck incident, look I will not make any official comment on future of these ducks until we know people are all ok+accounted for