What a good year it’s been for DP World, the world’s third- biggest ports firm. Led by Bin Sulayem, the company posted an 82 percent increase in full-year profit for 2011, helped by gains from the part-sale of its terminals in Australia and as container volumes rose. NDP World last year completed the sale of a 75 percent stake in its Australian unit for $1.5bn, and the company, which operates more than 60 terminals across six continents, said recently that it will repay a $3 billion revolving credit facility six months ahead of schedule with its own cash. Furthermore, DP World’s landmark London Gateway project in the UK will start operations in the fourth quarter of 2013. DP World’s shares - listed on NASDAQ Dubai and the LSE - have risen by 20 percent this year.