Restricted locking-operations caused by low river flows, coinciding with a dredging campaign to clear the approach channels of silt has been causing some complications for mariners off Penarth this weekend
This afternoon the Maltese registered oil/chemical tanker Atlantis Antalya was to be heard emitting several long loud toots on her ship’s horn to try to persuade pleasure cruisers waiting outside the Outer Harbour of Cardiff Barrage move out of her way as they were blocking the fairway into Cardiff Docks.
The cruisers were apparently dawdling outside the Outer Harbour because the large dredger “Sospan Dau” was busy at work inside the harbour sucking up tons of mud and silt from the sea bed .
Sospan Dau is a ” Trailing Suction Hopper Dredger (TSHD)” which yesterday began the latest of her regular 6-monthly dredging campaigns to remove a build-up of mud /sand within the Inner harbour and dredge the approach channel entrance.
Sospan is being augmented by the tug Tioga B which is employing a steel scraper, or scoop, on the sea bed to get to the hard-to reach parts of the harbour bed and dump mud where the dredger can reach it.
All the mud is then sucked up and dumped out at sea on the spoil grounds. Computerised readings provide the weight of the material removed for a charge to be levied.