According to a May 10 report from The Canadian Press, Naval architects have been brought in to help recover a large floating repair dock that sank at the Irving-owned Halifax Shipyards on May 8. The dock, which is lying in about 49.2 ft water, was submerging to accommodate a tugboat coming in for repairs when instead of lifting the tug out of the water the dock kept sinking.
(Source: The Canadian Press)