Japanese trader Marubeni is believed to have re-let a Golar LNG vessel this week for a short-term charter but at a rate slightly under what it is paying for the ship.Citigroup traders have snapped up the 140,643-cbm Golar Arctic (built 2008) for a six-month period, brokers said.The rate is understood to be in the $120,000 to $130,000 per day range.