The Russian navy said a plan to raise the Kursk nuclear submarine from the bottom of the Barents Sea hit a snag when deep-sea divers had trouble cutting through the craft's hull. Vice Admiral Mikhail Motsak, coordinating the recovery operation, said on Russian television that an international team of divers had run into problems while making holes in the craft to affix cables and eventually haul the sub up. "Everything looked fine on paper and when testing the equipment on the surface. After a series of unexplained explosions, the Kursk sank last August with the loss of all 118 people on board. President Vladimir Putin has vowed to raise the craft and dispose of its nuclear reactors.