Indonesia’s economy may expand closer to 6 percent next year if the government can address problems related to sea transportation and ports, prominent economist Faisal Basri said. Faisal, who spoke in a seminar on politic and economic outlook held by Antara news agency, Thursday, said inefficiencies in sea transportaion and ports contributed to high logistic costs. Spending on logistics accounts for 30 percent of the country’s Rp 5,400 trillion (US$572 billion) gross domestic product (GDP).