Royal Marines will be stationed in inflatable boats along the length of the Boat Race course tomorrow to ensure the event is not disrupted by another protester in the water.
Last year's race had to be halted when Trenton Oldfield swam into the path of the two crews and narrowly avoided being struck by an Oxford oar as he looked to sabotage an event he regarded as elitist.
Oldfield was released from prison in December having served seven weeks of a six-month sentence after being found guilty of causing a public nuisance.
Cambridge won the restarted race.
Royal Marines will be positioned along the bank of the River Thames between Putney and Chiswick for this year's Boat Race. It comes after protestor, Trenton Oldfield was jailed for swimming across the path of rowers during last year's race.
Oldfield was released from prison in December 2012 after serving seven weeks of a six month sentence for causing a public nuisance.
The Metropolitan Police recently contacted him to see if he was planning to protest at the 2013 event. Oldfield wrote back saying "I'll probably have a walk in the Cotswolds instead."
Security is going to be stepped up at this year's University Boat Race.
The London Royal Marines Reserve will provide a visible, unarmed presence on the river.
It comes after last year's race, when protester Trenton Oldfield swam into the paths of the crews.
Boat race protester Trenton Oldfield has abandoned his bid to win a cut in his six-month jail sentence, it was disclosed today.
Oldfield, who swam into the paths of the crews in this year's race, was due to appeal against the length of his sentence in the Court of Appeal next week.
A Judicial Office spokeswoman confirmed that Oldfield, of Myrdle Street, east London, had withdrawn his application.
Millions of television viewers watched as Oldfield, who was also ordered to pay £750 costs, halted the annual race on the Thames between Oxford and Cambridge universities on April 7.
He was found guilty of causing a public nuisance and sentenced by Judge Anne Molyneux.
The judge said Oldfield had acted dangerously, disproportionately, had not shown what he was actually protesting against, and displayed prejudice in sabotaging the event which Oldfield regarded as elitist.
A man who swam into the path of the University Boat Race has been sentenced to six months in prison for causing a public nuisance.
The judge said Trenton Oldfield had acted dangerously and disproportionately, and had not made it clear what he was protesting against. Mr Oldfield had claimed the event was elitist.
Trenton Oldfield, who disrupted this year's Boat Race was sentenced to six months in jail.
Trenton Oldfield, who disrupted thisyear's Boat Race by swimming into the path of the crews on the Thames, wastoday sentenced to six months in jail at Isleworth Crown Court after he wasconvicted of causing a public nuisance.
A man who disrupted this year's University Boat Race by swimming into the path of the rowers is due to be sentenced for causing a public nuisance.
Trenton Oldfield, 36, told the court that he wasprotesting against government elitism.
He's been warned he could face a jail sentence.
Trenton Oldfield, 36, was today found guilty at Isleworth Crown Court of causing a public nuisance after disrupting the Boat Race on April 7th this year, by swimming into the path of the crews.
The trial begins later of a swimmer accused of disrupting this year's boat race by swimming in the River Thames. Trenton Oldfield has pleaded not guilty to a charge of causing a public nuisance.
The race was stopped on 7th April when the Oxford and Cambridge boats were side by side near Chiswick Eyot, London. It was the first time in history the boat race was disrupted by a swimmer. The race was restarted nearly half an hour later. Cambridge went on to win after Oxford broke an oar.