The fisheries were held by the Incorporated Company of Dredgers (incorporated by Act of Parliament in 1793), the affairs being administered by a foreman, deputy foreman and jury of twelve; but in 1896 an Act of Parliament transferred the management of the fishery to a company.
The native tombrobbers, well-sinkers, dredgers and the like, however, come upon valuable objects from time to time, which find their way into private collections.
Harbour works were begun in 1857, piers and jetties were constructed, dredgers imported, and controversy raged over the various schemes for harbour improvement.
Under orders from the former, Captain Fairfax, RN., occupied Port Said on the night of 19th August, and Commander Edwards, R.N., proceeded down the canal, taking possession of the gares and dredgers, while Captain Fitzroy, R.N., occupied Ismailia after slight opposition.
This work, designed in 1857, but unexecuted during a quarter of a century, owing to insufficiency of funds, was completed in 1882; and in 1886, after other comparatively short cuttings had been made to get rid of difficult bends and further to deepen the channel without having to resort to dredgers, the desired minimum depth of 15 ft.
Powerful dredgers and sudd-cutting machines are used to keep open communications in the upper Nile and Bahr-el-Ghazal.