Transnet National Ports Authority’s (TNPA’s) Dredging Services division has begun another maintenance dredging campaign at the Port of Cape Town, South Africa, to guarantee the port has safe navigational channels and berthing facilities for shipping.
About 20,000 m3 of sand and sediment is anticipated to be removed during the dredging exercise, which began on 28 October. It will restore the design depths leading from the basin to the berths, as well as the berth areas alongside South East Quay in the basin. Dredging will also address localised high spots along the long quay in Duncan Dock
The 4,500 m3 Italeni grab hopper dredger and the Isandlwana trailing suction hopper dredger (TSHD) will be used for the exercise.
The two dredgers complement each other because the TSHD is built for high-speed sailing to the offshore disposal site while the Italeni enhances the precision of the final dredged depths. Multi-beam bathymetric surveys will be conducted regularly throughout the campaign to ensure that all areas within Duncan Dock are restored to their original design depths.
The dredge material within Duncan Dock will be discarded at the offshore disposal site. The use of the site has been authorised by the Department of Environmental Affairs.
TNPA’s fleet renewal programme has enhanced the dredging division’s ability to support the removal of approximately four million cubic meters of surplus material from the seabed every year at South Africa’s ports.