A crane has capsized on a barge in Milford Sound.
The crane fell on its side at Freshwater Basin this afternoon, leaving the body of it on the barge and part of the boom resting on a pile.
There is understood to be 200 litres of diesel and 24 litres of engine oil in the crane, and 1600 litres of hydraulic oil in a power pack on the barge.
Environment Southland is putting measures in place to deal with a potential oil spill.
Booms have been set out around the barge and more equipment and manpower has been sent from Bluff and Invercargill.