Russia drops piracy charges against Greenpeace activists 23 October 2013 Last updated at 20:33 Russia has dropped piracy charges against 30 Greenpeace activists, replacing them with hooliganism charges, according to officials. The new charge has a maximum penalty of seven years rather than 15. Greenpeace says it is still "wildly disproportionate." Greenpeace's Arctic Sunrise vessel was seized by Russian forces as activists tried to scale an offshore oil platform. All 30 people on board were detained. Two of them are freelance journalists. Not pirates The dropping of piracy charges against the Arctic 30 is not a huge surprise. Even Vladimir Putin had said he didn't think that the 30 people arrested on board the Arctic Sunrise were pirates. But why change charges now? The Russian authorities may be calculating that "hooliganism" is a more credible indictment than "piracy," making it easier for Moscow to argue to the world that Greenpeace committed a crime. The new charge is still a serious one, though - if found guilty of hooliganism, the detainees could be sent to prison for up to seven years. But under Russian law, punishment could also be limited to a fine. Vladimir Markin, the head of Russia's main investigating agency the Investigative Committee, told Russian news agencies that the charges had been reclassified. But the investigators did not rule out more serious charges at a later date - in particular the use of violence against officials. The refusal of the detainees to give evidence also gives the authorities reason to consider other offences such as terrorism and espionage, Mr Markin said. Last week, 11 Nobel prize-winners wrote to Russian President Vladimir Putin, urging him to drop the charges of piracy. The presidential press secretary, Dmitry Peskov, said the president had no power to influence the courts. Mr Putin said last month that the activists had violated international law but it was "absolutely evident that they are, of course, not pirates." Vladimir Chuprov of Greenpeace Russia said that there was no case for either piracy or hooliganism charges. "The Arctic 30 are no more hooligans than they were pirates," he said in a statement. This is still a wildly disproportionate charge that carries up to seven years in jail. It represents nothing less than an assault on the very principle of peaceful protest. Earlier Greenpeace Russia programme director Ivan Blokov told the Interfax news agency he was surprised the Russian government had refused to attend international court hearings in Germany over the detentions. The Russian foreign ministry released a statement pointing out that Moscow had opted out of UN Law of the Sea dispute procedures, which infringe upon sovereignty, in 1997. All 30 people who were on board the ship are in pre-trial detention in the northern port city of Murmansk until late November. They have complained of being held in harsh conditions, They were detained when Russian security sources stormed the ship five weeks ago following a protest against drilling for oil in the Arctic. Greenpeace denies any wrongdoing and is calling for the release of the detainees, who come from 18 countries, and the Arctic Sunrise.