* Dutch girl's plans to sail world kept on hold * Court extends state supervision until next July By Harro ten Wolde UTRECHT, Netherlands, Oct 30 (Reuters) - A Dutch court on Friday extended state supervision for a 14-year-old Dutch girl who had planned to become the youngest person to sail solo around the world until next July. Laura Dekker, who was born on her parents' boat in New Zealand and spent the first four years of her life at sea, intended to start a two-year solo voyage on Sept. 1 on her 8.3 metre (27 ft) yacht Guppy when she was still 13. Dekker's plans had captured media attention around the world. She wanted to set sail on Sept. 1. But a court blocked her departure and placed her under supervision after child welfare authorities said it would be irresponsible at age 13. In its review of the original decision in late August, the court in Utrecht on Friday said the trip posed risks to Dekker's safety. She turned 14 on Sept. 20. "The state supervision is aimed at protecting (Dekker) and assessing whether the trip would be adequately prepared," the court said in its ruling. It added the goal is to ensure that she does not set sail before it is reasonably safe. The court had originally placed her under temporary supervision in late August. [ID:nLS44649] Dekker was disappointed she failed to win the confidence of the court, a spokeswoman told reporters after the hearing. She added that Dekker could still be the youngest to sail solo around the world if she were to sail next year. Dekker's lawyer, Peter de Lange, said he respected and understood the court's ruling. In August, British 17-year-old Mike Perham became the youngest person to sail around the globe single-handed after nine months at sea. [ID:nLR710759] (Reporting by Harro ten Wolde; editing by Erik Kirschbaum)