Presumably to ensure that the Ebenhaezer barge can be moved into Bathurst Basin, the entrance to the Basin was dredged in March 2019. The Marine Group, a Cardiff-based company, was commissioned to do the work. The following link explains the dredging method used.
Normally the harbour is kept navigable by regular scouring which is sufficient to ensure that the entrance to the Basin is navigable for the leisure crafts moored there. The extra expense of dredging has been incurred to allow residential mooring on a ‘no mooring’ quay.