The search continues for a 54-year-old man, missing in waters off Central Queensland.
The man was sailing from Gladstone to Bundaberg with a friend, when he fell overboard on Saturday morning near Bustard Head.
Acting Sergeant Stacey Van Der Zwan said it was a co-ordinated search and rescue effort.
"Hervey Bay Water Police, Gladstone Water Police, along with our VMR rescues which we had Agnes Water and Bundaberg, so we had a lot of vessels on the water and assisting with the search.
She said rough weather hampered search efforts since the weekend.
"It was blowing 20 knot winds, white caps, like I said, the swell; it was very unfavourable and it has been like that for the last three days of the search".
As the search entered its fourth day, the perimeter was being widened, with jet skis, helicopters and ATVs being used to comb the coastline.