A search for two men missing in waters off the South Australian coast will be called off as hopes fade of finding them alive.
Tony Higgins, 57, and Derek Robinson, 48, left Coffin Bay in the 10-metre wooden-hulled fishing boat called the Margrel bound for Goolwa on Thursday.
They reported engine trouble to a friend on Friday night and advised they were going to divert to Kangaroo Island.
When no word had been heard from the men, the friend raised the alarm on Sunday, prompting a large-scale aerial search which has now covered more than 103,000 square kilometres.
On Wednesday, efforts focused on the shorelines along areas of Eyre Peninsula, Kangaroo Island and the Coorong, again without success.
Police said the aerial search would be called off on Wednesday night but other investigations would continue.
Superintendent Paul Bahr said with each passing hour, hopes of finding the men alive were fading.
"Our thoughts are with their families, who we are maintaining regular contact with, who are anxiously awaiting any word," he said.