Essex Fire Service was also called to the incident. They have said no one is trapped and no one is injured.
The fire service said the water was stopped by the crew:
Firefighters were sent to assist at the scene while the ship's own crew plugged the hole from inside and built a compartment with water tight doors to stem the leak as part of regular safety precautions.
The passengers and their vehicles are still on board but in no danger and the vessel will shortly be re-berthed so that they can continue their journey."
More top news
Any showers should die away this evening with most places dry overnight.
The veteran rockers Status Quo have been forced to postpone a concert in Norwich this weekend after frontman Francis Rossi became ill
Police are ramping up security at the British Grand Prix at Silverstone this year in the wake of a number of terror attacks.