A teenage girl has died after a speedboat hit a buoy in a marina near Southampton.
The 15-year-old was travelling in a RIB when the accident happened shortly after 10am on Saturday in Southampton Water, near Netley.
She was pronounced dead in hospital, Hampshire police said.
Twelve others who had been travelling in the boat were also taken to hospital, but no-one else suffered life-threatening injuries.
The coastguard said it received multiple 999 calls about the crash.
A spokeswoman said: “Three lifeboats, a coastguard rescue team and the ambulance service were all called to assist.
“There were some injuries and the 12 people who were on board were taken to shore and handed into the care of the ambulance service.”
Police are working with the Coastguard and Marine Accident Investigation Branch to find out what happened.
The victim’s family have been informed and are being supported by specialist officers.
Anyone with any information about the incident or who may have captured footage of it is asked to contact police on 101 quoting incident number 554.