I have heard rumors that the Nova dock at Halifax Shipyard was broken and in repair.
Today I received confirmation of this:
I was told that the Nova Dock has needed repairs since at least April, and that after evaluating options, costs to repair are approaching the cost of a New Submersible Dock. They have therefore decided to replace the dock. as the shipyard does not have the facilities to build a new dock, and are therefore in the process of attempting to source a replacement.