The TAT-9 cable entered service in 1992 and was retired in 2004.
It is understood that at least a section of the cable near the coast has been recovered from the seabed to reduce the hazard to vessels which fish the area. It is not known what length was recovered. Further information
Modern maps have not been found which show the route of the cable, but a mariners chart dated 2003 (prior to the decommissioning) shows the landing point on the south side of Poldhu beach near Mullion in Cornwall.
The map below is further confirmation of the TAT-9 landing point (taken from this document).
Information on the internet generally confirms that the cable landing station for TAT-9 was Goonhilly.
There is interest in the reuse of the remaining portions of the TAT-9 cable for ocean monitoring. Further information and significant technical details of the cable and its repeaters can be found in this review pdf.
Due for replacement sometime after 2015, the existing 33kV undersea cable to the Isles of Scilly from the mainland has been exposed by the 2013/14 winter storms.
The 55km cable installed in 1988 as part of a project to reinforce the supply to the islands, and to interconnect the outer islands, is at the end of its economic life.
The cable has a capacity of 7.5MW (maximum demand is currently approximately 4.5MW on the islands), and can be used to backfeed to the mainland 4MW if required from the 5.7MW primarily from the power station at St Mary’s.
Interestingly, the installation of the cable reduced electricity prices for islanders and allowed the introduction of Economy 7 using electricity from the mainland.
The ferocious winter in the UK which saw the railway line from Penzance back to the UK washed away, also exposed several submarine cables (the five cables below are on the same beach).
The image above is thought to be the Ulysses Cable landing station close to St Margaret’s Bay. This is quite small compared to other cable landing stations, probably due to the interconnection point of Ulysses-1 and Ulysses-2 (which lands at Lowestoft), being in London (see: http://en.wikipedia.org/wiki/ULYSSES_%28cable_system%29) where users of the cable can connect to either leg.
A beautiful day in Aldeburgh. The cable marker indicates the approximate location of the Farland North submarine cable.
The characteristic beach manhole (BMH) can be seen here, with the diamond submarine cable marker in the top left of the photo.
The cable landing station is just a stone’s throw from the beach.
The cable marker above and exchange are consistent with the location of the Farland North cable as shown on the map below.
Whilst researching cable landfalls at Broadstairs, I came across a forum comment about a cable landing station near the beach at a place called Dumpton Gap which has existed since the 1920s’. I am informed this was for the Canterbury – La Panne cable system (see comments below).
This beach is the landfall for the two modern submarine cables Pan European Crossing and Tangerine. It is not known if they are associated in any way with the building below, which still appears to be in use.
Forum source with additional information and pictures.
The picture above shows a cable being pulled in in September 1927.
References found in the BT archive:here.
In 1960, Marske-by-Sea was the landing point of a GPO cable to Gothenburg, now two cables land at Marske Sands, CANTAT3 (indicated by the marker in one of the the pictures below) and PANGEA North. CANTAT3 operated from 1994 to 2010.
The location of the Cable Landing Stations for these two cables is unknown at present, but there are some interesting buildings locally, including an underground one.