PC Nathan Lucy swam out after the woman, who'd jumped into the water from the Red Jet terminal.
Woman Injured In Homophobic Attack In Southsea
Police are investigating a homophobic attack on two people, outside a gay bar in Southsea.
A man and woman were injured by three men near Hampshire Boulevard in St Pauls Road early on Saturday - she suffered a fractured eye socket.
They also had abuse shouted at them and food thrown.
It took place between 2.45am and 3.15am on Saturday 15 October.
The victims, a 22-year-old man and a 28-year-old woman, were approached by three white men, described as being in their early 20s. The men threw food at the victims before shouting homophobic abuse and assaulting them.
The woman suffered a fracture around her left eye socket. The man received a cut lip.
Detective Constable Sharon Lewry, of Fratton CID, said:
"This was a totally unprovoked attack and it is being treated as a homophobic incident.
"While this was an isolated incident, we will not tolerate assaults of this kind. If anyone saw what happened they should call 101 as soon as possible."
Anyone with information can call DC Lewry at Fratton CID on 101, quoting 44160390103.
Alternatively, people can contact Crimestoppers on 0800 555 111, where information can be left anonymously.
Minicom users should call 01962 875000.
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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