A Greenpeace RIB carries a kite and a banner that reads "Clean up your mess, Shell" in a protest against Shell. The Esperanza carries a banner that reads "SHELL, THE OCEAN IS NOT YOUR DUMP!". The Shell operated Oil platform Brent-C (Charlie) is seen in the background. The installation is located in the Brent Oilfield in the UK part of the North Sea. According to Shell’s decommissioning proposals, it will leave behind the remains of four platforms in the Brent oil field. Shell estimates three of those platforms contain 640,000 cubic metres of oily water and 40,000 cubic metres of oily sediment with a total content of more than 11,000 tonnes of oil.