It is part of a coastal flood risk project described as 'one of the most important in the country'.
Volunteers have been cleaning up after shipping containers washed ashore leaving debris on beaches.
Celebrity chef Rosemary Shrager joins Christmas lunch in Pevensey Bay as part of a festive campaign.
The aim is to reduce litter and improve health, but a smoking campaigner says it is "absurd".
The Sospan Dau dredging vessel will make about 25 visits to Pevensey Bay over two to three weeks.
A phone packed in a sealed case allowed the stranded pair to call for help.
Ken Pollock, from Pevensey Bay, is part of the squad taking on Wales at St George's Park.
The alarm was raised when the pair were 30 metres off the shore near Pevensey Bay.
Graham Wood, who has a brain tumour, was to receive scan results on the day of the Queen's funeral.
