Swansea Canal coal and culm shipped from Swansea Docks suggest around 386,000 tons in 1839. The opening of the Tennant Canal to Swansea Docks in 1824 resulted in the Swansea Canal's riverside wharfs being improved, and tolls were reduced to maintain trade levels. The harbour facilities at Swansea were upgraded in 1852, when the river Tawe was diverted into a new channel to the east, and the original channel, which included the trans-shipment wharfs, became a floating harbour. A lock was constructed to give the canal boats direct access to the half-tide basin above the North Dock, and a loop of the
Swansea Sound on 1170MW and DAB and lastly, the Adult Contemporary-orientated 102.1 Swansea Bay Radio on FM and DAB. The city also has a community radio station Radio Tircoed. It is also served by two regional radio stations: Heart South Wales on its Swansea area frequency (106.0FM) and Nation Radio on its Swansea area frequency (107.3FM) and DAB. The patients and staff at Singleton Hospital can listen to the hospital radio station, Radio City 1386AM and Swansea University also runs its own radio station, Xtreme Radio, on 1431 AM. Providing the DAB service, the local multiplex called Swansea SW Wales is