The 21ft (6.4m) cabin cruiser began sinking as they passed Studland Bay on Sunday afternoon.

BBC: Family rescued from Studland nudist beach as boat sinks

The northern section of Studland Beach dedicated to naturists will be extended 160ft (50m) inland.

BBC: Studland Nudist Beach granted inland extension

The Studland Beach Users Action Group (SBUAG) was set up in 2005 to improve relations between beach users.

BBC: Studland Nudist Beach granted inland extension

At the time of the incident, on 7 August 2010, the RNLI said 37 people had to be rescued from the boat when it hit rocks near Studland.

BBC: RNLI rescue boat