An oil rig with 76 people on board has overturned and sunk in the Sea of Okhotsk in Russia\'s Far East region, the Itar-Tass news agency reported Sunday. No word on survivors is immediately available. The Russia Today (RT) news channel, which put the number of personnel on board at 67, reported that a distress signal was sent while the platform was being towed by an icebreaker amid high waves and strong winds.