PC Nathan Lucy swam out after the woman, who'd jumped into the water from the Red Jet terminal.
Vicious Attacks On Our Police Officers
In an exclusive, Heart's found out 900 Hampshire Police officers have been attacked in the space of just one year - 300 of them getting injured.
In the past few months alone, there have been some pretty vicious attacks.
In January, a police woman suffered a broken wrist in Southampton as she was trying to arrest a wanted man. Three officers were hurt trying to stop a fight outside a pub, one had to go to hospital.
In another case recently, someone who had just been arrested and was being put in the back of a police van, kicked the door and it hit an officer, splitting his head open. There has also been an attack when a police officer was punched in the mouth in a nightclub, knocking his teeth out.
Heart's Jo Rawlings spoke exclusively to Hampshire Police Chief Constable Alex Marshall:
Dad-of-two Nick Medlin from Ventnor died after being assaulted outside the Rose Inn pub in the town.
A section of Parkstone Road will be affected between 9.30am and 4.30pm for three days.
A man's died in hospital after a crash in Eastleigh.
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