Coastguard authorities said no-one was hurt during the grounding and no pollution had been detected.
Ocean Farm Services well boat Settler ran aground while transiting the narrow straights between Skye and the Scottish mainland, SalmonBusiness reported on Tuesday.
After hours of work, and one unsuccesful attempt, Stornoway Coastguard confirmed the vessel had been successfully refloated at 6.30pm and had been escorted to Mallaig.
From its route it seems that the well boat had spent the last three days moving fish for Scottish Sea Farms and was sailing from the factory back to a site when it ran aground, according to data collected by business intelligence provider Aquafacts.
Settler, launched in 2002 is a purpose built live fish carrier. Her carrying capacity is 650 tons, with a current draught of 4.8 meters. She measures 40.06 meters in length overall and 10 meters in width.
The well boat was previously owned by marine services company Solvtrans, under the name Ronja Settler.