In a statement the Onaway,Michigan-based shipyard identified the client as Kokosing Construction affiliateDurocher Marine.

The company said the units will be namedKokosing III and Kokosing IV and boast cargo capacities of 2,400 short tons apiece.

The first barge is due for delivery inSeptember of this year and the second is schedule to follow a month later.

Durocher Marine, which is also based inMichigan, specialises in projects to repair,stabilise and prevent shore and beach erosion in the US and the Caribbean.