Activists of the Greenpeace environmentalist group prevented a ship on Mondayfrom unloading a cargo of soybeans which they said were genetically modified,Reuters reported yesterday. The activists occupied two unloading cranes andsailed rubber dinghies around the freighter Polidefkis P. as it reached a portnear Bordeaux. French radio said the ship flew a Greek flag and had arrivedfrom New Orleans in the United States. Greenpeace said it was carrying 22,000of soybeans. The activists initially said they planned to prevent the shipfrom docking, but later relented amid fears that the ship might have beengrounded during the low tide. Greenpeace wants to prevent genetically modifiedorganisms (GMOs) from reaching Europe.