Photo: Guy WilliamsA radial sonar is being used to comb the bottom of Lake Wakatipu as the search for a missing Bluff man enters its fourth day. This morning Senior Sergeant John Fookes, of Queenstown, said the search teams spent yesterday in the search area - a ''box several hundred metres on each side'' - using a radial sonar to ''identify points of interest''. "They've covered a good proportion but not all of the search area, or initial search area, and have not found anything of significance at this point,'' Snr Sgt Fookes said. Snr Sgt Fookes said the water depth averaged between 30m and 33m in the search area, which only allowed divers a small amount of ''bottom time''. "It's far more practical to do a sonar scan and identify points of interest than attempt to search it using divers.''

Source: Otago Daily Times July 03, 2019 22:07 UTC